Timing Gears, Camshaft And Governor Gear - Nanni N3.30 Workshop Manual

05-E3B, 05-E3BG, WSM

(2) Timing Gears, Camshaft and Governor Gear

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.
Factory spec.
Backlash between idle
gear 1 and crank gear
Allowable limit
Factory spec.
Backlash between idle
gear 1 and cam gear
Allowable limit
Factory spec.
Backlash between idle
gear 1 and injection
pump gear
Allowable limit
(equipped with idle gear
Factory spec.
2) Backlash between
idle gear 1 and idle gear
Allowable limit
2
Governor Gear Backlash
Factory spec.
Backlash between
injection pump gear and
governor gear
Allowable limit
Factory spec.
(equipped with idle gear
2) idle gear 2 and
governor gear
Allowable limit
Idle Gear 1 and 2 Side Clearance
1. Set a dial indicator with its tip on the idle gear.
2. Measure the side clearance by moving the idle gear to the front
and rear.
3. If the measurement exceeds the allowable limit, replace the idle
gear collar.
Factory spec.
Idle gear 1 and 2 side
clearance
Allowable limit
S-56
DIESEL ENGINE
0.0320 to 0.115 mm
0.00126 to 0.00452 in.
0.15 mm
0.0059 in.
0.0360 to 0.114 mm
0.00142 to 0.00448 in.
0.15 mm
0.0059 in.
0.0340 to 0.116 mm
0.00134 to 0.00456 in.
0.15 mm
0.0059 in.
0.0330 to 0.117 mm
0.00130 to 0.00460 in.
0.15 mm
0.0059 in.
W10280630
0.0300 to 0.117 mm
0.00119 to 0.00460 in.
0.15 mm
0.0059 in.
0.030 to 0.117 mm
0.0012 to 0.00460 in.
0.15 mm
0.0059 in.
W1041576
0.20 to 0.51 mm
0.0079 to 0.020 in.
0.80 mm
0.031 in.
W10285590
KiSC issued 12, 2007 A