{"id":2873,"date":"2023-11-17T23:20:16","date_gmt":"2023-11-17T22:20:16","guid":{"rendered":"https:\/\/mbci.mackuz.ovh\/?p=2873"},"modified":"2023-11-17T23:20:16","modified_gmt":"2023-11-17T22:20:16","slug":"removal-and-installation-of-valve-springs-2","status":"publish","type":"post","link":"https:\/\/mbci.mackuz.ovh\/index.php\/2023\/11\/17\/removal-and-installation-of-valve-springs-2\/","title":{"rendered":"Removal and installation of valve springs"},"content":{"rendered":"

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05\u2014250 Removal and installation of valve springs<\/strong><\/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 cold (approx. 20<\/div>\n<\/div>\n<\/td>\n
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with engine warm (60 \u00b0C \u00b1 15<\/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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M 0.05 mm higher during lasting outside temperatures below \u201420 \u00b0C.<\/div>\n<\/div>\n<\/td>\n
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Tightening torques<\/strong><\/div>\n<\/div>\n<\/td>\n
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Nm<\/strong><\/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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Rocker arm bearing brackets to cylinder head<\/div>\n<\/div>\n<\/td>\n
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38<\/div>\n<\/div>\n<\/td>\n
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Special tools<\/strong><\/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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\"om617<\/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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Socket 27 mm, 1\/2″ square, for rotating engine<\/div>\n<\/div>\n<\/td>\n
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001 589 65 09 00<\/div>\n<\/div>\n<\/td>\n
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Contact handle for rotating engine (component of compression pressure recorder 001 589 46 21 00)<\/div>\n<\/div>\n<\/td>\n
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001 589 46 21 08<\/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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Each valve has one valve spring (64) and one rotocap (69).<\/div>\n
On engines with long service life, it is recommended to renew rotocaps at the same time.<\/div>\n<\/div>\n<\/td>\n
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23 Valve guide\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 66 Valve stem seal<\/div>\n
62\u00a0 \u00a0 Valve spring retainer 69 Rotocap<\/div>\n
63\u00a0 \u00a0 Cap nut\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 70 Valve 63a Counternut<\/div>\n
64\u00a0 \u00a0 Valve spring<\/div>\n<\/div>\n<\/td>\n
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05.8-250\/1 F 2<\/div>\n<\/div>\n<\/td>\n
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Valve springs with higher spring tension are installed on engine 617.950 since January 1979 and on engines 617.951\/952 since start of series (05-260).<\/div>\n
On engine 617.950 (usa) starting model year 1980 with increased output and on engines 617.951\/952, do not install valve spring, part No. 180 053 06 20.<\/div>\n
On the other hand, on engine 617.950 (usa) up to model year 1980 with increased output, valve spring part No. 615 053 01 20 may also be installed.<\/div>\n<\/div>\n<\/td>\n
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Start of series<\/strong><\/div>\n<\/div>\n<\/td>\n
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Engine<\/div>\n<\/div>\n<\/td>\n
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Starting chassis No.<\/div>\n<\/div>\n<\/td>\n
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617.950 617.951\/952<\/div>\n<\/div>\n<\/td>\n
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006303 start of series<\/div>\n<\/div>\n<\/td>\n
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Identification:<\/strong><\/div>\n
Valve spring, part No. 180 053 06 20, two green or purple-green color dots.<\/div>\n
Valve spring, part No. 615 053 01 20, two yellow or purple-yellow color dots.<\/div>\n
Renew damaged cap nuts (63).<\/div>\n
Cap nuts are available in three versions:<\/div>\n<\/div>\n<\/td>\n
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1st version<\/strong><\/div>\n<\/div>\n<\/td>\n
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Cap nut with small supporting surface (A).<\/div>\n<\/div>\n<\/td>\n
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2nd version<\/strong><\/div>\n
Cap nut reinforced in upper range, with larger sup\u00adporting surface (B).<\/strong><\/div>\n<\/div>\n<\/td>\n
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3rd version<\/strong><\/div>\n<\/div>\n<\/td>\n
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Cap nut reinforced in upper range and hard-chromed.<\/div>\n<\/div>\n<\/td>\n
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\"om617<\/div>\n<\/td>\n
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Identification: silver colored.<\/div>\n<\/div>\n<\/td>\n
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05.8-250\/2 F 2<\/div>\n<\/div>\n<\/td>\n
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On engines with chilled cast iron camshaft and rocker arms with carbide facing, only the hard-chromed cap nut may be installed.<\/div>\n
The hard-chromed cap nut can also be installed on engines with chilled cast iron camshafts and rocker arms with inductance-hardened and hard-chromed running surface.<\/div>\n
Spare parts (ET) Sindelfingen will keep only hard-chromed cap nuts in stock.<\/div>\n<\/div>\n<\/td>\n
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Removal<\/div>\n<\/div>\n<\/td>\n
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\"om617<\/div>\n<\/td>\n
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1 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 direc\u00adtion 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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\"om617<\/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, disconnect 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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\"om617<\/div>\n<\/td>\n
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Model 126.120<\/div>\n<\/div>\n<\/td>\n
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05.8-250\/3 F 2<\/div>\n<\/div>\n<\/td>\n
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2 Remove rocker arm with rocker arm bearing brackets (05-235).<\/div>\n<\/div>\n<\/td>\n
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3 Set piston of respective cylinder to ignition TDC.<\/div>\n
For this purpose, rotate crankshaft with tool com\u00adbination.<\/div>\n<\/div>\n<\/td>\n
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\"om617<\/div>\n<\/td>\n
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1100-6498\/1<\/strong><\/div>\n<\/div>\n<\/td>\n
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4 Place holding wrench on valve spring retainer.<\/div>\n<\/div>\n<\/td>\n
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\"om617<\/div>\n<\/td>\n
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5\u00a0 \u00a0Unscrew cap nut (63) by means of valve adjusting wrench.<\/div>\n
For this purpose, apply counterhold to counternut (63a) by means of second valve adjusting wrench.<\/div>\n
6\u00a0 \u00a0Unscrew counternut (63a).<\/div>\n
7\u00a0 \u00a0 Remove valve spring retainer and valve spring.<\/div>\n
8\u00a0 \u00a0Check valve spring, renew according to condition (05-260).<\/div>\n<\/div>\n<\/td>\n
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\"om617<\/div>\n<\/td>\n
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05.8-250\/4 F 2<\/div>\n<\/div>\n<\/td>\n
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Installation<\/strong><\/div>\n<\/div>\n<\/td>\n
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\"om617<\/div>\n<\/td>\n
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9 Insert valve spring with narrow coils toward cylinder head (color dots at top).<\/div>\n<\/div>\n<\/td>\n
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1054-7671<\/strong><\/div>\n<\/div>\n<\/td>\n
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10\u00a0 \u00a0Mount valve spring retainer.<\/div>\n
Lug on valve spring retainer (arrow) should be seated in groove on valve stem.<\/div>\n
11\u00a0 \u00a0 Screw on counternut and cap nut.<\/div>\n
12\u00a0 \u00a0 Install rocker arm with rocker arm bearing brackets (05-235).<\/div>\n
13\u00a0 \u00a0Adjust valve clearance (05\u2014210).<\/div>\n
14\u00a0 \u00a0Mount cylinder head cover.<\/div>\n<\/div>\n<\/td>\n
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\"om617<\/div>\n<\/td>\n
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Valve timing<\/div>\n<\/div>\n<\/td>\n
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57\u00a0 \u00a0 Tensioning spring<\/div>\n
58\u00a0 \u00a0 Rocker arm shaft 58a Rocker arm shaft<\/div>\n
59\u00a0 \u00a0 Rocker arm<\/div>\n
59a Rocker arm bearing bushing<\/div>\n
62\u00a0 \u00a0 Valve spring retainer<\/div>\n
63\u00a0 \u00a0 Cap nut 63a Counternut<\/div>\n
64\u00a0 \u00a0 Valve spring<\/div>\n<\/div>\n<\/td>\n
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65\u00a0 \u00a0 Bearing bracket<\/div>\n
66\u00a0 \u00a0 Valve shaft seals<\/div>\n
67\u00a0 \u00a0Screw 67a\u00a0 Washer<\/div>\n
68\u00a0 \u00a0 Fitted sleeve<\/div>\n
69\u00a0 \u00a0 Rotocap<\/div>\n
70\u00a0 \u00a0 Intake valve<\/div>\n
71\u00a0 \u00a0 Exhaust valve<\/div>\n<\/div>\n<\/td>\n
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05.8-250\/5 F 2<\/div>\n<\/div>\n<\/td>\n
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 <\/p>\n","protected":false},"excerpt":{"rendered":"

    05\u2014250 Removal and installation of valve springs   Valve clearance with engine cold (approx. 20 with engine warm (60 \u00b0C \u00b1 15   Intake 0.101) 0.151)   Exhaust 0.35 0.40   M 0.05 mm higher during lasting outside temperatures below \u201420 \u00b0C.   Tightening torques Nm Nuts for cylinder head cover 15 Rocker arm bearing brackets to cylinder head 38 Special tools     Valve adjusting wrench 14 mm (2 each) 615 589 00 01 00 Holding wrench for valve spring retainer 615 589 00 03 00 Socket 27 mm, 1\/2″ square, for rotating engine 001 589 65 09 00 Contact handle for rotating engine (component of compression pressure recorder 001 589 46 21 00) 001 589 46 21 08   Note Each valve has one valve spring (64) and one rotocap (69). On engines with long service life, it is recommended to renew rotocaps at the same time. 23 Valve guide\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 66 Valve stem seal 62\u00a0 \u00a0 Valve spring retainer 69 Rotocap 63\u00a0 \u00a0 Cap nut\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 70 Valve 63a Counternut 64\u00a0 \u00a0 Valve spring   05.8-250\/1 F 2       Valve springs with higher spring tension are installed on engine 617.950 since January 1979 and on engines 617.951\/952 since start of series (05-260). On engine 617.950 (usa) starting model year 1980 with increased output and on engines 617.951\/952, do not install valve spring, part No. 180 053 06 20. On the other hand, on engine 617.950 (usa) up to model year 1980 with increased output, valve spring part No. 615 053 01 20 may also be installed.   Start of series   Engine Starting chassis No.   617.950 617.951\/952 006303 start of series   Identification: Valve spring, part No. 180 053 06 20, two green or purple-green color dots. Valve spring, part No. 615 053 01 20, two yellow or purple-yellow color dots. Renew damaged cap nuts (63). Cap nuts are available in three versions:   1st version   Cap nut with small supporting surface (A).   2nd version Cap nut reinforced in upper range, with larger sup\u00adporting surface (B).   3rd version   Cap nut reinforced in upper range and hard-chromed. Identification: silver colored.   05.8-250\/2 F 2       On engines with chilled cast iron camshaft and rocker arms with carbide facing, only the hard-chromed cap nut may be installed. The hard-chromed cap nut can also be installed on engines with chilled cast iron camshafts and rocker arms with inductance-hardened and hard-chromed running surface. Spare parts (ET) Sindelfingen will keep only hard-chromed cap nuts in stock.   Removal 1 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 direc\u00adtion 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, disconnect 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   05.8-250\/3 F 2       2 Remove rocker arm with rocker arm bearing brackets (05-235).   3 Set piston of respective cylinder to ignition TDC. For this purpose, rotate crankshaft with tool com\u00adbination.   1100-6498\/1   4 Place holding wrench on valve spring retainer.   5\u00a0 \u00a0Unscrew cap nut (63) by means of valve adjusting wrench. For this purpose, apply counterhold to counternut (63a) by means of second valve adjusting wrench. 6\u00a0 \u00a0Unscrew counternut (63a). 7\u00a0 \u00a0 Remove valve spring retainer and valve spring. 8\u00a0 \u00a0Check valve spring, renew according to condition (05-260).   05.8-250\/4 F 2       Installation 9 Insert valve spring with narrow coils toward cylinder head (color dots at top).   1054-7671   10\u00a0 \u00a0Mount valve spring retainer. Lug on valve spring retainer (arrow) should be seated in groove on valve stem. 11\u00a0 \u00a0 Screw on counternut and cap nut. 12\u00a0 \u00a0 Install rocker arm with rocker arm bearing brackets (05-235). 13\u00a0 \u00a0Adjust valve clearance (05\u2014210). 14\u00a0 \u00a0Mount cylinder head cover.   Valve timing     57\u00a0 \u00a0 Tensioning spring 58\u00a0 \u00a0 Rocker arm shaft 58a Rocker arm shaft 59\u00a0 \u00a0 Rocker arm 59a Rocker arm bearing bushing 62\u00a0 \u00a0 Valve spring retainer 63\u00a0 \u00a0 Cap nut 63a Counternut 64\u00a0 \u00a0 Valve spring 65\u00a0 \u00a0 Bearing bracket 66\u00a0 \u00a0 Valve shaft seals 67\u00a0 \u00a0Screw 67a\u00a0 Washer 68\u00a0 \u00a0 Fitted sleeve 69\u00a0 \u00a0 Rotocap 70\u00a0 \u00a0 Intake valve 71\u00a0 \u00a0 Exhaust valve   05.8-250\/5 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-2873","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\/2873","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=2873"}],"version-history":[{"count":1,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2873\/revisions"}],"predecessor-version":[{"id":2874,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/posts\/2873\/revisions\/2874"}],"wp:attachment":[{"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/media?parent=2873"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/categories?post=2873"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mbci.mackuz.ovh\/index.php\/wp-json\/wp\/v2\/tags?post=2873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}