Page 246
REPAIR INSTRUCTIONS
2. Install shaft (3) into the rear of the auxiliary
shaft housing. Use care when aligning the
shaft through the rear bearing (1).
Refer to Figure 267.
3. Install the thrust washer (4) and secure it in
position with the patch-lock capscrews (3)
and hardened washers.
4. Tighten the thrust washer retaining patch-
lock capscrews to the specified torque,
15 lb-ft (20 N•m), using torque wrench
J 24406, or equivalent.
5. Install the auxiliary shaft gear (2) on the
shaft splines (5).
The auxiliary shaft and nut threads must be clean
and dry before assembly. Clean the threads
thoroughly with Brakleen
®
or electrical contact
cleaner. Apply Loctite
®
271 or 277 to the threads
and install the nut.
6. Install the auxiliary shaft nut (1) and tighten
to the specified torque, 300 lb-ft (407 N•m),
using torque wrench J 23775-01, or
equivalent.
267
Figure 267 — Auxiliary Shaft Gear Installation
Oil Pump Installation
[219 MU]
Make sure the oil pump is in satisfactory condition
as covered under Lubrication System
Components Bench Procedures in the REPAIR
INSTRUCTIONS section.
Because of differences in the E-Tech™ and E7
gear set helixes, it is important that the correct
component/parts are installed.
r
An improper drive gear on the oil pump will
prevent oil pump installation, assuming a
correct gear is on the auxiliary shaft.
r
If an oil pump and an auxiliary shaft
assembly were replaced, two improper
gears could be installed, and engine failure
would result.
r
In replacing any of these critical parts,
always refer to part number information in
the MACK Parts System to ensure the
correct component/part is being used.
1. Position the oil pump (1) on the cylinder
block (3). Refer to Figure 268.
2. Secure the pump in position using the
mounting capscrews (2). Tighten the
mounting capscrews to the specified torque,
40 lb-ft (54 N•m), using torque wrench
J 24407, or equivalent.
Apply Loctite
®
271 to all capscrews used to install
the oil pump.
1. Nut
2. Auxiliary Shaft Gear
3. Capscrew
4. Thrust Washer
5. Shaft Splines
5_106_00.bk Page 246 Friday, August 4, 2000 11:17 AM
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