{"id":2848,"date":"2023-11-17T22:59:31","date_gmt":"2023-11-17T21:59:31","guid":{"rendered":"https:\/\/mbci.mackuz.ovh\/?p=2848"},"modified":"2023-11-17T22:59:31","modified_gmt":"2023-11-17T21:59:31","slug":"checking-and-correcting-adjustment-of-tdc-transmitter-2","status":"publish","type":"post","link":"https:\/\/mbci.mackuz.ovh\/index.php\/2023\/11\/17\/checking-and-correcting-adjustment-of-tdc-transmitter-2\/","title":{"rendered":"Checking and correcting adjustment of TDC transmitter"},"content":{"rendered":"

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03\u2014345 Checking and correcting adjustment of TDC transmitter<\/div>\n<\/div>\n<\/td>\n
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Valve clearance<\/strong><\/div>\n<\/div>\n<\/td>\n
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With engine<\/div>\n<\/div>\n<\/td>\n
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cold<\/div>\n<\/div>\n<\/td>\n
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(approx.<\/div>\n<\/div>\n<\/td>\n
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20 \u00b0C)<\/div>\n<\/div>\n<\/td>\n
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With engine warm<\/div>\n<\/div>\n<\/td>\n
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(60<\/div>\n<\/div>\n<\/td>\n
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\u00b0C \u00b1<\/strong><\/div>\n<\/div>\n<\/td>\n
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15 \u00b0C)<\/strong><\/div>\n<\/div>\n<\/td>\n
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Intake<\/div>\n<\/div>\n<\/td>\n
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0.101<\/sup>)<\/div>\n<\/div>\n<\/td>\n
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0.151<\/sup>)<\/div>\n<\/div>\n<\/td>\n
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Exhaust<\/div>\n<\/div>\n<\/td>\n
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0.35<\/div>\n<\/div>\n<\/td>\n
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0.40<\/div>\n<\/div>\n<\/td>\n
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’) 0.05 mm higher during lasting outside temperatures below \u201420 \u00b0C.<\/div>\n<\/div>\n<\/td>\n
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Tightening torque<\/strong><\/div>\n<\/div>\n<\/td>\n
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Nm<\/div>\n<\/div>\n<\/td>\n
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Nuts for cylinder head cover<\/div>\n<\/div>\n<\/td>\n
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15<\/div>\n<\/div>\n<\/td>\n
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Special tools<\/strong><\/div>\n<\/div>\n<\/td>\n
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\"om617<\/div>\n<\/td>\n
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001 589 65 09 00<\/div>\n<\/div>\n<\/td>\n
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Socket 27 mm, 1\/2″ square for rotating engine<\/div>\n<\/div>\n<\/td>\n
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Measuring extension<\/div>\n<\/div>\n<\/td>\n
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123 589 09 63 00<\/div>\n<\/div>\n<\/td>\n
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Locating device for adjusting slide<\/div>\n<\/div>\n<\/td>\n
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116 589 19 21 00<\/div>\n<\/div>\n<\/td>\n
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Assembly mandrel for valve stem seals<\/div>\n<\/div>\n<\/td>\n
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617 589 00 43 00<\/div>\n<\/div>\n<\/td>\n
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Valve adjusting wrench 14 mm (2 each)<\/div>\n<\/div>\n<\/td>\n
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615 589 00 01 00<\/div>\n<\/div>\n<\/td>\n
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Holding wrench for valve spring retainer<\/div>\n<\/div>\n<\/td>\n
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615 589 00 03 00<\/div>\n<\/div>\n<\/td>\n
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Dial gauge holder<\/div>\n<\/div>\n<\/td>\n
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121 589 00 21 00<\/div>\n<\/div>\n<\/td>\n
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Magnetic dial gauge holder<\/div>\n<\/div>\n<\/td>\n
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116 589 12 21 00<\/div>\n<\/div>\n<\/td>\n
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03.8-345\/1 F 2<\/div>\n<\/div>\n<\/td>\n
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Conventional tool<\/strong><\/div>\n<\/div>\n<\/td>\n
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Dial gauge A 1 DIN 878<\/div>\n<\/div>\n<\/td>\n
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e.g. made by Mahr, D-7300 Esslingen order no. 810<\/div>\n<\/div>\n<\/td>\n
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Note<\/strong><\/div>\n<\/div>\n<\/td>\n
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\"om617<\/div>\n<\/td>\n
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The pin in vibration damper should be accurately under TDC transmitter at crankshaft position 20\u00b0 after TDC.<\/div>\n
Check adjustment of TDC transmitter and make corrections, if required.<\/div>\n
a)\u00a0 When renewing TDC transmitter adjusting slide.<\/div>\n
b)\u00a0 When renewing crankshaft with balancing disc and vibration damper.<\/div>\n
c)\u00a0 \u00a0When completing basic engines.<\/div>\n
With the cylinder head removed, the measuring pin of the dial gauge can be set directly on piston crown. For this purpose, place magnetic dial gauge holder on cylinder crankcase parting surface.<\/div>\n
For adjusting TDC transmitter, proceed in this case according to item 7, 14 and 17\u201424.<\/div>\n<\/div>\n<\/td>\n
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Checking<\/strong><\/div>\n<\/div>\n<\/td>\n
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1<\/strong>\u00a0 \u00a0 Remove fan cover. For this purpose, disconnect upper coolant hose on radiator.<\/div>\n
2\u00a0 \u00a0 Remove fan.<\/div>\n
3\u00a0 \u00a0 Remove V-belt of power-steering pump and refri\u00adgerant compressor (13\u2014340).<\/div>\n
4\u00a0 \u00a0 Remove double diaphragm or piston-vacuum pump.<\/div>\n<\/div>\n<\/td>\n
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03.8-345\/2 F 2<\/strong><\/div>\n<\/div>\n<\/td>\n
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5 Disconnect regulating linkage to remove cylinder head cover. Pull out locking eye of longitudinal regulating shaft (arrow).<\/div>\n
On models 116.120 and 123, pull longitudinal regulat\u00ading shaft out of rubber mount in forward direction and remove in rearward direction.<\/div>\n
On model 126.120, pull longitudinal regulating shaft out of guide lever in rearward direction and remove in forward direction.<\/div>\n<\/div>\n<\/td>\n
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Model 116.120<\/div>\n<\/div>\n<\/td>\n
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Model 123<\/div>\n<\/div>\n<\/td>\n
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On models 123 with automatic transmission 722.303 (W4A 040) and 126.120, pull off central plug for vacuum lines (71) or vacuum lines. Disconnect bowden wire, compress black plastic clip (arrow) and pull bowden wire out of holder in rearward direction.<\/div>\n<\/div>\n<\/td>\n
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Model 126.120<\/div>\n<\/div>\n<\/td>\n
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6 Remove front rocker arm group.<\/div>\n
For this purpose, set camshaft in such a manner that<\/div>\n
the rocker arms are not under load.<\/div>\n
Attention!<\/strong><\/div>\n
Do not rotate engine on camshaft, but on crankshaft by means of tool combination.<\/div>\n<\/div>\n<\/td>\n
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03.8-345\/3 F 2<\/div>\n<\/div>\n<\/td>\n
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7 Set piston of 1st cylinder to TDC. Rotate crank\u00adshaft with tool combination.<\/div>\n<\/div>\n<\/td>\n
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110O-649S\/1<\/strong><\/div>\n<\/div>\n<\/td>\n
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8 At intake valve of 1st cylinder, place holding wrench on hexagon of valve spring retainer.<\/div>\n<\/div>\n<\/td>\n
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9\u00a0 \u00a0 Unscrew cap nut (63) with valve adjusting wrench. For this purpose, apply counterhold to counternut (63a) by means of second valve adjusting wrench.<\/div>\n
10\u00a0 \u00a0 Unscrew counternut (63a).<\/div>\n<\/div>\n<\/td>\n
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03.8-345\/4 F 2<\/div>\n<\/div>\n<\/td>\n
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11\u00a0 \u00a0 Remove valve spring retainer and valve spring.<\/div>\n
12\u00a0 \u00a0 Push off valve stem seal by means of a screw\u00addriver or pull off by means of pliers.<\/div>\n
Attention!<\/strong><\/div>\n
Do not damage valve stem and valve guide.<\/div>\n
13\u00a0 \u00a0Push valve on piston crown.<\/div>\n<\/div>\n<\/td>\n
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14\u00a0 \u00a0 Reverse crankshaft for approx. 10 by means of tool combination.<\/div>\n
15\u00a0 \u00a0Screw dial gauge holder with threaded sleeve to stud in cylinder head.<\/div>\n
16\u00a0 \u00a0 Insert dial gauge and screw measuring extension to dial gauge.<\/div>\n<\/div>\n<\/td>\n
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17\u00a0 \u00a0 Place measuring arm on valve stem with 2 mm preload.<\/div>\n
18\u00a0 \u00a0Slowly rotate crankshaft with tool combination in direction of rotation of engine until the large needle of the dial gauge stops (TDC position).<\/div>\n<\/div>\n<\/td>\n
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19\u00a0 \u00a0Unscrew TDC transmitter and pull out.<\/div>\n
20\u00a0 \u00a0 Loosen dial gauge and place measuring extension on valve stem at 5 mm preload. Rotate dial gauge scale until large needle points to zero.<\/div>\n
21\u00a0 \u00a0 Slowly rotate crankshaft with tool combination in direction of ratation of engine until dial gauge has moved back by 3.63 mm.<\/div>\n<\/div>\n<\/td>\n
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03.8-345\/5 F 2<\/div>\n<\/div>\n<\/td>\n
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22 Place locating device without handle (arrow) into adjusting slide.<\/div>\n
Pin in balancing disc should enter groove of locating device.<\/div>\n
If pin is not engaging, correct position of adjusting slide.<\/div>\n<\/div>\n<\/td>\n
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Correcting<\/div>\n<\/div>\n<\/td>\n
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23\u00a0 \u00a0 Loosen adjusting slide and displace until pin in balancing disc enters groove of locating device.<\/div>\n
24\u00a0 \u00a0Screw down adjusting slide and remove locating device.<\/div>\n<\/div>\n<\/td>\n
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25\u00a0 \u00a0 Insert TDC transmitter and tighten.<\/div>\n
26\u00a0 \u00a0 Remove dial gauge and unscrew dial gauge holder.<\/div>\n
27\u00a0 \u00a0 Lubricate new valve stem seal and mount with assembly mandrel. For this purpose, place an assembly sleeve on valve stem.<\/div>\n
28\u00a0 \u00a0 Install valve spring and rocker arm group.<\/div>\n<\/div>\n<\/td>\n
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29\u00a0 \u00a0Check valve clearance (05-210).<\/div>\n
30\u00a0 \u00a0Mount cylinder head cover.<\/div>\n
31\u00a0 \u00a0 Install double diaphragm or piston-vacuum pump with new gasket.<\/div>\n
32\u00a0 \u00a0 Mount V-belt of powersteering pump and refri\u00adgerant compressor and tension (13-340).<\/div>\n
33\u00a0 \u00a0Attach fan and fan cover.<\/div>\n<\/div>\n<\/td>\n
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03.8-345\/6 F 2<\/div>\n<\/div>\n<\/td>\n
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 <\/p>\n","protected":false},"excerpt":{"rendered":"

    03\u2014345 Checking and correcting adjustment of TDC transmitter   Valve clearance With engine cold (approx. 20 \u00b0C) With engine warm (60 \u00b0C \u00b1 15 \u00b0C) Intake 0.101)       0.151)       Exhaust 0.35       0.40         ’) 0.05 mm higher during lasting outside temperatures below \u201420 \u00b0C.   Tightening torque Nm   Nuts for cylinder head cover 15   Special tools 001 589 65 09 00 Socket 27 mm, 1\/2″ square for rotating engine Measuring extension 123 589 09 63 00 Locating device for adjusting slide 116 589 19 21 00 Assembly mandrel for valve stem seals 617 589 00 43 00 Valve adjusting wrench 14 mm (2 each) 615 589 00 01 00 Holding wrench for valve spring retainer 615 589 00 03 00 Dial gauge holder 121 589 00 21 00 Magnetic dial gauge holder 116 589 12 21 00   03.8-345\/1 F 2       Conventional tool   Dial gauge A 1 DIN 878 e.g. made by Mahr, D-7300 Esslingen order no. 810   Note The pin in vibration damper should be accurately under TDC transmitter at crankshaft position 20\u00b0 after TDC. Check adjustment of TDC transmitter and make corrections, if required. a)\u00a0 When renewing TDC transmitter adjusting slide. b)\u00a0 When renewing crankshaft with balancing disc and vibration damper. c)\u00a0 \u00a0When completing basic engines. With the cylinder head removed, the measuring pin of the dial gauge can be set directly on piston crown. For this purpose, place magnetic dial gauge holder on cylinder crankcase parting surface. For adjusting TDC transmitter, proceed in this case according to item 7, 14 and 17\u201424.   Checking   1\u00a0 \u00a0 Remove fan cover. For this purpose, disconnect upper coolant hose on radiator. 2\u00a0 \u00a0 Remove fan. 3\u00a0 \u00a0 Remove V-belt of power-steering pump and refri\u00adgerant compressor (13\u2014340). 4\u00a0 \u00a0 Remove double diaphragm or piston-vacuum pump.   03.8-345\/2 F 2       5 Disconnect regulating linkage to remove cylinder head cover. Pull out locking eye of longitudinal regulating shaft (arrow). On models 116.120 and 123, pull longitudinal regulat\u00ading shaft out of rubber mount in forward direction and remove in rearward direction. On model 126.120, pull longitudinal regulating shaft out of guide lever in rearward direction and remove in forward direction. Model 116.120   Model 123   On models 123 with automatic transmission 722.303 (W4A 040) and 126.120, pull off central plug for vacuum lines (71) or vacuum lines. Disconnect bowden wire, compress black plastic clip (arrow) and pull bowden wire out of holder in rearward direction. Model 126.120   6 Remove front rocker arm group. For this purpose, set camshaft in such a manner that the rocker arms are not under load. Attention! Do not rotate engine on camshaft, but on crankshaft by means of tool combination.   03.8-345\/3 F 2       7 Set piston of 1st cylinder to TDC. Rotate crank\u00adshaft with tool combination.   110O-649S\/1   8 At intake valve of 1st cylinder, place holding wrench on hexagon of valve spring retainer.   9\u00a0 \u00a0 Unscrew cap nut (63) with valve adjusting wrench. For this purpose, apply counterhold to counternut (63a) by means of second valve adjusting wrench. 10\u00a0 \u00a0 Unscrew counternut (63a).     03.8-345\/4 F 2       11\u00a0 \u00a0 Remove valve spring retainer and valve spring. 12\u00a0 \u00a0 Push off valve stem seal by means of a screw\u00addriver or pull off by means of pliers. Attention! Do not damage valve stem and valve guide. 13\u00a0 \u00a0Push valve on piston crown.   14\u00a0 \u00a0 Reverse crankshaft for approx. 10 by means of tool combination. 15\u00a0 \u00a0Screw dial gauge holder with threaded sleeve to stud in cylinder head. 16\u00a0 \u00a0 Insert dial gauge and screw measuring extension to dial gauge.   17\u00a0 \u00a0 Place measuring arm on valve stem with 2 mm preload. 18\u00a0 \u00a0Slowly rotate crankshaft with tool combination in direction of rotation of engine until the large needle of the dial gauge stops (TDC position).   19\u00a0 \u00a0Unscrew TDC transmitter and pull out. 20\u00a0 \u00a0 Loosen dial gauge and place measuring extension on valve stem at 5 mm preload. Rotate dial gauge scale until large needle points to zero. 21\u00a0 \u00a0 Slowly rotate crankshaft with tool combination in direction of ratation of engine until dial gauge has moved back by 3.63 mm.   03.8-345\/5 F 2       22 Place locating device without handle (arrow) into adjusting slide. Pin in balancing disc should enter groove of locating device. If pin is not engaging, correct position of adjusting slide.   Correcting 23\u00a0 \u00a0 Loosen adjusting slide and displace until pin in balancing disc enters groove of locating device. 24\u00a0 \u00a0Screw down adjusting slide and remove locating device.   25\u00a0 \u00a0 Insert TDC transmitter and tighten. 26\u00a0 \u00a0 Remove dial gauge and unscrew dial gauge holder. 27\u00a0 \u00a0 Lubricate new valve stem seal and mount with assembly mandrel. For this purpose, place an assembly sleeve on valve stem. 28\u00a0 \u00a0 Install valve spring and rocker arm group.   29\u00a0 \u00a0Check valve clearance (05-210). 30\u00a0 \u00a0Mount cylinder head cover. 31\u00a0 \u00a0 Install double diaphragm or piston-vacuum pump with new gasket. 32\u00a0 \u00a0 Mount V-belt of powersteering pump and refri\u00adgerant compressor and tension (13-340). 33\u00a0 \u00a0Attach fan and fan cover.   03.8-345\/6 F 2        <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","footnotes":""},"categories":[47,44],"tags":[],"class_list":["post-2848","post","type-post","status-publish","format-standard","hentry","category-crankshaft-assembly-om617","category-om617"],"aioseo_notices":[],"featured_image_src":null,"author_info":{"display_name":"mackuz","author_link":"https:\/\/mbci.mackuz.ovh\/index.php\/author\/mackuz\/"},"_links":{"self":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2848","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/comments?post=2848"}],"version-history":[{"count":1,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2848\/revisions"}],"predecessor-version":[{"id":2849,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2848\/revisions\/2849"}],"wp:attachment":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/media?parent=2848"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/categories?post=2848"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/tags?post=2848"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}