TM 5-2410-240-23-1
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GEAR GROUP INSPECT
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1. Lock crankshaft and camshaft gear (Figure 6, Item 4) in position. See Finding Top Center Position for No. 1
Piston in this work package.
2. Lock fuel injector pump gear (Figure 6, Item 2) in position (WP 0075).
N OT E
Inspect gears for wear or for damage.
3. Measure backlash between camshaft gear (Figure 6, Item 4) and idler gear (Figure 6, Item 1). Required
backlash is 0.0020 in. to 0.0055 in. (0.05 to 0.14 mm).
4. Measure backlash between fuel injector pump gear (Figure 6, Item 2) and idler gear (Figure 6, Item 1).
Required backlash is 0.0020 in. to 0.0059 in. (0.05 to 0.15 mm).
5. Measure backlash between idler gear (Figure 6, Item 1) and crankshaft gear (Figure 6, Item 3). Required
backlash is 0.0020 in. to 0.006 in. (0.05 to 0.15 mm).
6. Measure end play on idler gear (Figure 6, Item 1). Required end play is 0.0039 in. to 0.0295 in. (0.10 to
0.75 mm).
7. Replace gears if backlash is greater than specified value (WP 0075).
Figure 6. Front Gear Group.
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END OF TASK