TM 5-4310-277-14
attaching screws fingertight. Now, use feeler gage
KEY to Figure 4-22.
1. Muffler assembly
15. Spring sleeve
and measure the gap between housing and crankcase
2. Muffler body
16. Governor main spring
at top and bottom. Average the two dimensions and
3. Screen
17. Washer
add .005 inch (.01 cm). This will determine the
4. Felt packing
18.
selection of housing gaskets to use. A combination of
5. Release valve body
19. Washer
gasket should equal the total determined above.
6. Release valve spring
20. Spring pin
7. Ball
21. Governor spindle
Proper adherence to this procedure will minimize
8. Screw
22. Governor cover gasket
crankshaft end play.
9. Compression nut
23. Baffle plate
(2) Remove housing from crankcase and install
10. Compression body
24. Compression nut
housing gaskets as determined above. Install
11. Governor housing cover
25. Compression body
12. Release valve plunger
26. Screw
housing and secure with attaching screws. Tighten
13. Governor weight
27. Governor housing
screws to 25 ft-lbs (3.4 kgm).
14. Bumper spring
28. Governor housing gasket set
(3) Install the body (25) and nut (24) in housing
(27).
b. Cleaning and Inspection.
(4) Install baffle plate (23) and gasket (22).
(5) Install spindle (21), pin (20), washer (19),
Dry cleaning solvent, P-D-680, used to clean
screw (18), washer (17), spring (16), and sleeve (15).
parts is potentially dangerous to personnel
and property. Avoid repeated and
(6) Install spring (14), weight (13), and plunger
(12).
prolonged skin contact. Do not use near
(7) Position the cover (11) on the housing and
open flame or excessive heat. Flash point of
solvent is 100 F. (38CC.) - 138 F. (59 C.).
install mounting screws (8); install body (10) ant- nut
(9) on housing (11).
(1) Clean all parts with cleaning solvent, Federal
(8) Install ball (7), spring (6), and valve body
Specification P-D-680, and dry thoroughly.
(5).
(2) Inspect the springs for evidence of loss of
(9) Assemble muffler assembly (1) by installing
tension and set. Replace if defective.
packing (4), screen (3), and body (2).
(3) Inspect the housing cover, baffle plate, and
housing for cracks, breaks, damaged threads, or
4-30. Handhole Plate and Gasket
other damage. Replace if defective.
(Model HGR5-8M-1 only)
(4) Inspect the plunger, sleeve, governor pin,
a. Removal.
spindle and weights, for cracks, nicks, burrs, wear or
(1) Stop the air compressor, and release all air
other damage. Replace all damaged or worn parts.
from the compressor by opening the draincock.
(5) Inspect all hardware for breaks, distortion,
(2) Drain oil from crankcase by removing oil
or damaged threads. Replace all damaged hardware.
drain plug.
(6) Discard and replace all gaskets.
(3) Remove handhole plate and gasket as fol-
c. Assembly and Installation.
lows:
(1) Carefully install the housing (27, fig. 4-22).
Leave out the housing gaskets (28), at this time.
Attach the housing to the crankcase with one screw
(3).
(26) at the top and one screw at the bottom. Be sure
(b) Remove the plug (4).
that the main bearing assembly on the end of the
(c) Remove cap (5) and nipple (6).
crankshaft fits properly in the housing. Set the two
(d) Remove gage (7) and plug (8).
