TM 5-4310-451-14
5-54. ENGINE SPEED ADJUSTMENT.
This Task Covers:
Adjustment
Initial Setup:
Materials/Parts:
Tools/Test Equipment:
•· Two lockwashers
•· General mechanic's tool kit
ADJUSTMENT
1.
Start engine (see paragraph 2-10).
2.
Check and record maximum engine no-load speed.
3.
Stop engine (see paragraph 2-12).
4.
Disconnect spring (1) and lever return spring (3) from governor control lever (2) on governor (8).
5.
Remove two bolts (5), lockwashers (4), and variable speed housing (6) from governor (8). Discard lockwashers.
CAUTION
Maximum speed of loaded engine must not be more than 2100 rpm. If maximum
loaded speed Is exceeded, damage to engine may result.
NOTE
Maximum no-load speed of engine must not be more than 2240 rpm. Add or
remove shims, If necessary. Each 0.01 In. (0.25 mm) thick shim will change
engine speed approximately 10 rpm. Add shims to raise engine speed. Remove
shims to lower engine speed.
6.
Add or remove shim(s) (7), as necessary.
7.
Install variable speed housing (6) to governor (8) with two new lockwashers (4) and bolts (5).
8.
Connect spring (1) and lever return spring (3) to governor control lever (2).
9.
Start engine (see paragraph 2-10) and check maximum engine no-load speed.
10.
Stop engine (see paragraph 2-12) and repeat steps 4 through 8 if necessary.
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