TM 5-4210-233-14&P-2
6-6. FIRE PUMP - Continued
(48) Install lower shift shaft bushing (41) into lower portion (8) of case assembly.
(49) Install four dowels (19) in flange of the mid-section (15) portion of the case.
WARNING
Serious injury could occur if heavy equipment is moved/lifted without sufficient
personnel to do the job. Use proper physical lifting procedures or use a suitable
lifting device or dolly. Wear safety shoes, gloves and other suitable protective
clothing. Area should be clear of other personnel. Serious injury or death can
result from falling objects.
(50) Coat flange of the mid-section (15) portion of the case with a light coat of sealant (Item 35, Appendix
(51) Position lower portion of the case (8) to the mid-section (15) of the case and align with dowels (19) and
tap into position until flanges of the mid-section and lower section meet. Install cap screws (16), bolts
(17), lockwashers (109) and nuts (18) and tighten securely.
(52) Install cap screws (9) with nylock insert and lockwashers (10) in drive shaft housing (11) and tighten
these fasteners and those previously installed (13 and 14) in the drive shaft housing (11) securely.
NOTE
The drive line assembly was factory shimmed to limit the axial float of the drive
line. If any of the drive line parts have been changed, it may be necessary to
change the total thickness of shims (31) between the coupling shaft housing (12)
and the transmission case. Shims are color coded for thickness as follows:
.005" (.127 mm) blue, .007" (.178 mm) natural, .010" (.254 mm) brown. The
correct thickness of shims can be determined as follows:
(53) Install coupling shaft (32) and housing (12) assembly with no shims between the housing and case.
Tighten cap screws (9 and 13) evenly and tap the end of the coupling shaft (32) with a soft mallet to
force drive line all the way forward. Do not overtighten causing bending or breakage of the flange of
the coupling shaft housing (12).
(54) Measure gaps between housing (12) and case in several places to assure a uniform gap, and add
0.005 in. (.127 mm). This will be the total thickness of shims needed to provide the recommended
axial float of 0.005 in. (.127 mm).
(55) Remove coupling shaft housing (12) from case after measuring gap.
NOTE
Field conditions may make it difficult to determine the correct amount of shims.
If in doubt, add another 0.005 in. (.127 mm) shims. No harm will result from a
small amount of additional axial float but bearing life will be shortened if
bearings are excessively preloaded.
6-24
