{"id":2889,"date":"2023-11-17T23:29:42","date_gmt":"2023-11-17T22:29:42","guid":{"rendered":"https:\/\/mbci.mackuz.ovh\/?p=2889"},"modified":"2023-11-17T23:29:42","modified_gmt":"2023-11-17T22:29:42","slug":"removal-and-installation-of-tensioning-rail","status":"publish","type":"post","link":"https:\/\/mbci.mackuz.ovh\/index.php\/2023\/11\/17\/removal-and-installation-of-tensioning-rail\/","title":{"rendered":"Removal and installation of tensioning rail"},"content":{"rendered":"

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05-330 Removal and installation of tensioning rail<\/strong><\/div>\n<\/div>\n<\/td>\n
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Tightening torques<\/strong><\/div>\n
Nuts for cylinder head cover Closing plug for chain tensioner Necked-down screw for camshaft sprocket<\/div>\n
Special tools<\/div>\n
Impact puller for bearing bolt (basic unit)<\/div>\n
Threaded bolt M 8, 150 mm long for impact puller<\/div>\n
Threaded bolt M 6, 50 mm long for impact puller<\/div>\n
Puller for bearing bolt<\/div>\n
Threaded bolt M 8, 30 mm long for puller<\/div>\n
Screwdriver (Allen wrench) with tommy handle for hex. socket screws 6 mm, 440 mm long<\/div>\n
Socket 27 mm, 1\/2″ square, for rotating engine<\/div>\n<\/div>\n<\/td>\n
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Nm 15 90 80<\/div>\n
116 589 20 33 00<\/div>\n
616 \"\"<\/span>\"\"\"\"\"\"\"\"\"\"\"\"<\/span><\/span>\"\"\"\"\"\"\"\"\"\"589 00 34 00<\/span>\"\"<\/span><\/span><\/span> 116 589 01 34 00 115 589 20 33 00<\/div>\n
115\u00a0589 00 34 00<\/div>\n
116\u00a0\"\"<\/span>\"\"\"\"\"\"\"\"\"\"\"\"<\/span><\/span>\"\"\"\"\"\"\"\"\"\"589 03 07 00<\/span>\"\"<\/span><\/span><\/span> 001 589 65 09 00<\/div>\n<\/div>\n<\/td>\n
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Note<\/strong><\/div>\n<\/div>\n<\/td>\n
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To avoid mixups with tensioning rail of 4-cylinder gasoline engines, the tensioning rails have been marked.<\/div>\n
The tensioning rail of the 4-cylinder gasoline engine is wider at upper end (B) and has no bore in upper part (arrow).<\/div>\n<\/div>\n<\/td>\n
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05.8-330\/1 F 2<\/div>\n<\/div>\n<\/td>\n
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On the other hand, the tensioning rail of this engine is pointed at upper end (A) and has an 8 mm bore in upper part.<\/div>\n<\/div>\n<\/td>\n
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A Tensioning rail diesel engines B Tensioning rail gasoline engines<\/div>\n<\/div>\n<\/td>\n
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In addition, a lug has been cast-on to lower end of tensioning rail to avoid confusion.<\/div>\n
The lug on the tensioning rail of this engine is located in direction of cylinder 1 and on tensioning rail of 4-cylinder gasoline engine in direction of balancing disk.<\/div>\n<\/div>\n<\/td>\n
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A Tensioning rail diesel engines B Tensioning rail gasoline engines<\/div>\n<\/div>\n<\/td>\n
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In the periods June \u2014 August and September \u2014 October 1980 a tensioning rail made by another manufacturer has been installed.<\/div>\n
This tensioning rail is not available as a spare part.<\/div>\n<\/div>\n<\/td>\n
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Start of series<\/strong><\/div>\n<\/div>\n<\/td>\n
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Model<\/div>\n<\/div>\n<\/td>\n
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Chassis end No.<\/div>\n<\/div>\n<\/td>\n
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116.120<\/div>\n<\/div>\n<\/td>\n
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026904-028634<\/div>\n<\/div>\n<\/td>\n
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123.193<\/div>\n<\/div>\n<\/td>\n
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000166-000384<\/div>\n<\/div>\n<\/td>\n
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126.120<\/div>\n<\/div>\n<\/td>\n
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000955-001657<\/div>\n<\/div>\n<\/td>\n
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05.8-330\/2 F 2<\/div>\n<\/div>\n<\/td>\n
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Removal<\/div>\n<\/div>\n<\/td>\n
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1\u00a0 \u00a0 Remove radiator and fan.<\/div>\n
2\u00a0 \u00a0 Disconnect regulating linkage to remove cylinder head cover. Pull out locking eye of longitudinal regu\u00adlating shaft (arrow).<\/div>\n<\/div>\n<\/td>\n
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Model 116.120<\/div>\n<\/div>\n<\/td>\n
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On models 116.120 and 123, pull longitudinal regu\u00adlating 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 123<\/div>\n<\/div>\n<\/td>\n
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On models 123 with automatic transmission 722.303 (W 4 A 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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3\u00a0 \u00a0 Remove pulley and vibration damper (03\u2014340).<\/div>\n
4\u00a0 \u00a0 Rotate crankshaft with tool combination until recess in balancing disk is in front of bearing bolt of tensioning rail (Fig. item 12).<\/div>\n<\/div>\n<\/td>\n
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05.8-330\/3 F 2<\/div>\n<\/div>\n<\/td>\n
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5 On engines with EGR \u00ae. remove pipe line be\u00adtween EGR valve and exhaust manifold (arrow). For this purpose, unscrew shielding plate (10).<\/div>\n<\/div>\n<\/td>\n
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6 On model 123 with level control, unscrew line holder on thermostat housing (arrow).<\/div>\n<\/div>\n<\/td>\n
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7 Unscrew closing plug of chain tensioner.<\/div>\n
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The closing plug is under pressure of compression<\/div>\n<\/div>\n<\/td>\n
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spring.<\/div>\n<\/div>\n<\/td>\n
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8 Remove compression spring in chain tensioner.<\/div>\n<\/div>\n<\/td>\n
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05.8-330\/4 F 2<\/div>\n<\/div>\n<\/td>\n
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9 Mark camshaft sprocket and timing chain in rela\u00adtion to each other.<\/div>\n<\/div>\n<\/td>\n
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10 Remove slide rail in cylinder head.<\/div>\n<\/div>\n<\/td>\n
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Pull out bearing bolt by means of impact puller.<\/div>\n<\/div>\n<\/td>\n
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11 Remove camshaft sprocket.<\/div>\n
For loosening necked-down screw, apply counterhold to camshaft sprocket by means of a screwdriver or steel bolt.<\/div>\n<\/div>\n<\/td>\n
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05.8-330\/5 F 2<\/div>\n<\/div>\n<\/td>\n
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12 Knock out bearing bolt by means of impact puller.<\/div>\n<\/div>\n<\/td>\n
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Attention!<\/div>\n
If bearing bolt is stuck to the extent that it cannot be knocked out with impact puller, use puller part No. 115 589 20 33 00.<\/div>\n
For this purpose, remove balancing disk and provide puller with a recess.<\/div>\n
The recess is necessary to position the puller with cylinder crankcase cover installed.<\/div>\n<\/div>\n<\/td>\n
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13\u00a0 \u00a0 Remove tensioning rail in upward direction.<\/div>\n
14\u00a0 \u00a0Unscrew cyl. head screw M 8 in chain box adja\u00adcent to pressure bolt of chain tensioner by means of screwdriver (Allen wrench) with tommy handle.<\/div>\n
15\u00a0 \u00a0Pull out pressure bolt of chain tensioner in in\u00adward direction (arrow).<\/div>\n
16\u00a0 \u00a0Clean bearing bolt.<\/div>\n
17\u00a0 \u00a0 Renew badly worn tensioning rails and bearing bolts.<\/div>\n<\/div>\n<\/td>\n
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05.8-330\/6 F 2<\/div>\n<\/div>\n<\/td>\n
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Installation<\/strong><\/div>\n<\/div>\n<\/td>\n
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18\u00a0 \u00a0Coat bearing bolt on flange with sealing com\u00adpound.<\/div>\n
19\u00a0 \u00a0Position tensioning rail and knock in bearing bolt by means of impact puller.<\/div>\n
20\u00a0 \u00a0Place camshaft sprocket with timing chain on camshaft, while paying attention to color marks.<\/div>\n<\/div>\n<\/td>\n
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21 Position necked-down screw for fastening cam\u00adshaft sprocket and tighten to 80 Nm. For this purpose, apply counterhold to camshaft sprocket by means of a screwdriver or a steel bolt.<\/div>\n<\/div>\n<\/td>\n
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22 Place pressure bolt of chain tensioner on assembly detent.<\/div>\n<\/div>\n<\/td>\n
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A Chain tensioner in assembly position B Chain tensioner in operating position<\/div>\n<\/div>\n<\/td>\n
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23\u00a0 \u00a0 Insert compression spring.<\/div>\n
24\u00a0 \u00a0Position closing plug of chain tensioner with new sealing ring and tighten to 90 Nm.<\/div>\n
Make sure that pressure bolt is seated on thrust piece of tensioning rail.<\/div>\n
25\u00a0 \u00a0Screw in cyl. head bolt M 8 by means of screw\u00addriver (Allen wrench) with tommy handle.<\/div>\n
26\u00a0 \u00a0 For further installation proceed vice versa to removal.<\/div>\n<\/div>\n<\/td>\n
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    05-330 Removal and installation of tensioning rail   Tightening torques Nuts for cylinder head cover Closing plug for chain tensioner Necked-down screw for camshaft sprocket Special tools Impact puller for bearing bolt (basic unit) Threaded bolt M 8, 150 mm long for impact puller Threaded bolt M 6, 50 mm long for impact puller Puller for bearing bolt Threaded bolt M 8, 30 mm long for puller Screwdriver (Allen wrench) with tommy handle for hex. socket screws 6 mm, 440 mm long Socket 27 mm, 1\/2″ square, for rotating engine Nm 15 90 80 116 589 20 33 00 616 589 00 34 00 116 589 01 34 00 115 589 20 33 00 115\u00a0589 00 34 00 116\u00a0589 03 07 00 001 589 65 09 00   Note To avoid mixups with tensioning rail of 4-cylinder gasoline engines, the tensioning rails have been marked. The tensioning rail of the 4-cylinder gasoline engine is wider at upper end (B) and has no bore in upper part (arrow).   05.8-330\/1 F 2       On the other hand, the tensioning rail of this engine is pointed at upper end (A) and has an 8 mm bore in upper part. A Tensioning rail diesel engines B Tensioning rail gasoline engines In addition, a lug has been cast-on to lower end of tensioning rail to avoid confusion. The lug on the tensioning rail of this engine is located in direction of cylinder 1 and on tensioning rail of 4-cylinder gasoline engine in direction of balancing disk. A Tensioning rail diesel engines B Tensioning rail gasoline engines   In the periods June \u2014 August and September \u2014 October 1980 a tensioning rail made by another manufacturer has been installed. This tensioning rail is not available as a spare part.   Start of series   Model Chassis end No. 116.120 026904-028634 123.193 000001-000031   000166-000384 126.120 000001-000100   000955-001657   05.8-330\/2 F 2       Removal 1\u00a0 \u00a0 Remove radiator and fan. 2\u00a0 \u00a0 Disconnect regulating linkage to remove cylinder head cover. Pull out locking eye of longitudinal regu\u00adlating shaft (arrow). Model 116.120   On models 116.120 and 123, pull longitudinal regu\u00adlating 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 123   On models 123 with automatic transmission 722.303 (W 4 A 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   3\u00a0 \u00a0 Remove pulley and vibration damper (03\u2014340). 4\u00a0 \u00a0 Rotate crankshaft with tool combination until recess in balancing disk is in front of bearing bolt of tensioning rail (Fig. item 12).   05.8-330\/3 F 2       5 On engines with EGR \u00ae. remove pipe line be\u00adtween EGR valve and exhaust manifold (arrow). For this purpose, unscrew shielding plate (10).   6 On model 123 with level control, unscrew line holder on thermostat housing (arrow).   7 Unscrew closing plug of chain tensioner. Attention! The closing plug is under pressure of compression spring.   8 Remove compression spring in chain tensioner.   05.8-330\/4 F 2       9 Mark camshaft sprocket and timing chain in rela\u00adtion to each other.   10 Remove slide rail in cylinder head. Pull out bearing bolt by means of impact puller.     11 Remove camshaft sprocket. For loosening necked-down screw, apply counterhold to camshaft sprocket by means of a screwdriver or steel bolt.   05.8-330\/5 F 2       12 Knock out bearing bolt by means of impact puller.   Attention! If bearing bolt is stuck to the extent that it cannot be knocked out with impact puller, use puller part No. 115 589 20 33 00. For this purpose, remove balancing disk and provide puller with a recess. The recess is necessary to position the puller with cylinder crankcase cover installed.     13\u00a0 \u00a0 Remove tensioning rail in upward direction. 14\u00a0 \u00a0Unscrew cyl. head screw M 8 in chain box adja\u00adcent to pressure bolt of chain tensioner by means of screwdriver (Allen wrench) with tommy handle. 15\u00a0 \u00a0Pull out pressure bolt of chain tensioner in in\u00adward direction (arrow). 16\u00a0 \u00a0Clean bearing bolt. 17\u00a0 \u00a0 Renew badly worn tensioning rails and bearing bolts.   SQS-MTS?   05.8-330\/6 F 2       Installation   18\u00a0 \u00a0Coat bearing bolt on flange with sealing com\u00adpound. 19\u00a0 \u00a0Position tensioning rail and knock in bearing bolt by means of impact puller. 20\u00a0 \u00a0Place camshaft sprocket with timing chain on camshaft, while paying attention to color marks.   21 Position necked-down screw for fastening cam\u00adshaft sprocket and tighten to 80 Nm. For this purpose, apply counterhold to camshaft sprocket by means of a screwdriver or a steel bolt.   22 Place pressure bolt of chain tensioner on assembly detent. A Chain tensioner in assembly position B Chain tensioner in operating position   23\u00a0 \u00a0 Insert compression spring. 24\u00a0 \u00a0Position closing plug of chain tensioner with new sealing ring and tighten to 90 Nm. Make sure that pressure bolt is seated on thrust piece of tensioning rail. 25\u00a0 \u00a0Screw in cyl. head bolt M 8 by means of screw\u00addriver (Allen wrench) with tommy handle. 26\u00a0 \u00a0 For further installation proceed vice versa to removal.   05.8-330\/7 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":[48,44],"tags":[],"class_list":["post-2889","post","type-post","status-publish","format-standard","hentry","category-engine-timing-valves","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\/2889","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=2889"}],"version-history":[{"count":1,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2889\/revisions"}],"predecessor-version":[{"id":2890,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2889\/revisions\/2890"}],"wp:attachment":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/media?parent=2889"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/categories?post=2889"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/tags?post=2889"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}