TM-9-2520-238-34
M113A1 FOV, M113A2 FOV, M548 AND M548A1
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL; RIGHT ANGLE DRIVE, COOLING FAN; GEARCASE, TRANSFER; DRIVE ASSEMBLY, FINAL; DIFFERENTIAL, STEERING CONTROL; BRAKE, SINGLE DISK; CYLINDER ASSEMBLY, HYDRAULIC BRAKE
TM-9-2520-238-34 - Page 67 of 319
TM 9-2520-238-34
REPAIR COOLING FAN RIGHT ANGLE DRIVES A AND B — Continued
0015 00
NOTE
Bevel gearshaft and bevel gear are a matched set and must be installed as a set.
7.
Check that serial number etched on face of bevel gearshaft (1) matches serial number etched on bevel gear (2).
8.
Record M.D. (Mounting Distance) dimension etched on face of bevel gearshaft (1) for later use in shimming cartridge
assembly (3).
NOTE
Matched duplex bearings stamped NEW DEPARTURE 0L07 or MCR107 must be installed
with thick sections of outer races facing each other. Matched duplex radial bearings stamped
NEW DEPARTURE 3L07 must be installed with stamped faces toward outside of assembly.
9.
Assemble cartridge assembly (3) as follows:
a.
Measure length of sleeve spacer (4) and distance between bearing bores inside bearing housing (5). Use caliper set.
b.
Peel laminated shim (6) to thickness to provide equal spacing between inner and outer races of bearings (7) and (8)
within ± 0.001 inch (shim thickness + spacer length = distance between bearing bores inside housing). Use caliper
set.
c.
Install ball bearing (7), bevel gearshaft (1), sleeve spacer (4), laminated shim (6), and ball bearing (8) in bearing
housing (5).
d.
Install new key washer (9) and round nut (10) on bevel gearshaft (1). Bend tang on key washer into slot on nut.
0015 00-9
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