Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Legacy 2000-2003 Approved Subaru Legacy 2000 2000 Service Manual ENGINE SECTION Engine MSA5TCD00L16121
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>> Download MSA5TCD00L16121 documenatation <<Text preview - extract from the document2-3 [W4A0] SERVICE PROCEDURE
4. Valve Rocker Assembly
4. Valve Rocker Assembly CAUTION:
Arrange all removed parts in order so that they
A: REMOVAL can be installed in their original positions.
1) Disconnect PCV hose and remove rocker 3) Remove nut and adjuster screw from valve
cover. rocker.
2) Removal of valve rocker assembly
(1) Remove bolts (a) through (b) in alphabetical C: INSPECTION
sequence.
1. VALVE ROCKER ARM
CAUTION:
1) Measure inside diameter of valve rocker arm
Leave two or three threads of bolt (a) engaged
and outside diameter of valve rocker shaft, and
to retain valve rocker assembly.
determine the difference between the two (= oil
clearance).
Clearance between arm and shaft:
Standard
0.020 -- 0.054 mm (0.0008 -- 0.0021 in)
Limit
0.10 mm (0.0039 in)
B2M2605A
(2) Equally loosen bolts (e) through (h) all the
way, being careful that knock pin is not gouged.
B2M0072
B2M2605A
(3) Remove valve rocker assembly.
B2M0073
2) If oil clearance exceeds the limit, replace valve
rocker arm or shaft, whichever shows greater
amount of wear.
Rocker arm inside diameter:
22.020 -- 22.041 mm (0.8669 -- 0.8678 in)
B2M2606 Rocker shaft diameter:
21.987 -- 22.000 mm (0.8656 -- 0.8661 in)
B: DISASSEMBLY 3) Measure inside diameter of rocker shaft sup-
port and outside diameter of valve rocker shaft,
1) Remove bolts which secure rocker shaft. and determine the difference between the two (=
2) Extract rocker shaft. Remove valve rocker oil clearance).
arms, springs, plates and shaft supports from
rocker shaft.
22
SERVICE PROCEDURE [W4D0] 2-3
4. Valve Rocker Assembly
Clearance between support and shaft: 6) Check that valve rocker arm roller rotates
Standard smoothly. If not, replace valve rocker arm.
0.005 -- 0.039 mm (0.0002 -- 0.0015 in)
Limit 2. INTAKE AND EXHAUST VALVE
0.05 mm (0.0020 in) ROCKER SHAFT
4) If oil clearance exceeds the limit, replace rocker Visually check oil relief valve of shaft end for any
shaft support or shaft, whichever shows greater of the following abnormalities.
amount of wear.
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