wsm wg972-e4, Workshop Manual

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ENGINE
WG972-E4, WSM
1-S46
Push Rod Alignment
1. Place the push rod on V blocks.
2. Measure the push rod alignment.
3. If the measurement exceeds the allowable limit, replace the
push rod.
9Y1211108ENS0075US0
Oil Clearance between Tappet and Tappet Guide Bore
1. Measure the tappet O.D. with an outside micrometer.
2. Measure the I.D. of the tappet guide bore with a cylinder gauge,
and calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit or the tappet is
damaged, replace the tappet.
9Y1211108ENS0076US0
(3) Timing Gear and Camshaft
Timing Gear Backlash
1. Set a dial indicator (lever type) with its tip on the gear tooth.
2. Move the gear to measure the backlash, holding its mating gear.
3. If the backlash exceeds the allowable limit, check the oil
clearance of the shafts and the gear.
4. If the oil clearance is proper, replace the gear.
9Y1211108ENS0077US0
Push rod alignment Allowable limit
0.25 mm
0.0098 in.
Oil clearance between
tappet and tappet guide
bore
Factory specification
0.016 to 0.052 mm
0.00063 to 0.0020 in.
Allowable limit
0.10 mm
0.0039 in.
Tappet O.D. Factory specification
17.966 to 17.984 mm
0.70733 to 0.70803 in.
Tappet guide bore I.D. Factory specification
18.000 to 18.018 mm
0.70867 to 0.70937 in.
Backlash between idle
gear and crank gear
Factory specification
0.0430 to 0.124 mm
0.00170 to 0.00488 in.
Allowable limit
0.15 mm
0.0059 in.
Backlash between idle
gear and cam gear
Factory specification
0.0470 to 0.123 mm
0.00185 to 0.00484 in.
Allowable limit
0.15 mm
0.0059 in.
Backlash between oil
pump drive gear and
crank gear
Factory specification
0.0410 to 0.123 mm
0.00162 to 0.00484 in.
Allowable limit
0.15 mm
0.0059 in.
KiSC issued 07, 2015 A