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MAINTENANCE MANUAL - Meritor

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E. Install the input bearing cage over the input<br />

shaft on the oil pump.<br />

• If dowel pins are used, verify that the dowel<br />

pins in the cage are aligned with the holes<br />

in the oil pump.<br />

F. Install the capscrews that fasten the oil<br />

pump to the input bearing cage. Tighten the<br />

capscrews to 22-23 lb-ft (30-31 N.m). .<br />

G. Install the O-rings onto the oil pump and input<br />

bearing cage.<br />

6. Inspect the fork surface<br />

• If you installed a unitized seal on the outp ut<br />

bearing cage, look the procedure in this section,<br />

and then proceed to Step 7. Figure5.66.<br />

• For all other seals, look the following instructions.<br />

A. Inspect the fork for scratches, corrosion or a<br />

wear track from the previous oil seal. Replace<br />

the fork if any of these conditions exist.<br />

B. Inspect the lead chamfer of the fork for nicks<br />

and burrs which may damage the sealing tip<br />

during installation.<br />

C. Wipe clean the fork sealing surface and<br />

face.<br />

• If a POSE seal is used, install the seal 1/2inch<br />

(13 mm) in the fork hub. See to procedure<br />

in this section.<br />

CAUTION<br />

USE A PRESS AND A SLEEVE OR INSTAL-<br />

LATION TOOL TO INSTALL THE FORk. DO<br />

NOT USE A HAMMER OR MALLET. USING<br />

A HAMMER OR MALLET CAN DAMAGE<br />

THE BEARINGS, FORk OR FLANGE.<br />

7. Use a press and sleeve or an installation<br />

tool to install the fork or the flange in the<br />

input shaft. If a press and sleeve are used,<br />

verify that the input shaft is well supported.<br />

Figure 5.73.<br />

<strong>MAINTENANCE</strong> <strong>MANUAL</strong><br />

PRESS<br />

Assembly and Installation<br />

SLEEVE<br />

YOKE,SHOWN<br />

INPUT<br />

SHAFT INPUT BEARING<br />

CAGE<br />

Figure 5.73<br />

If a fork is removed after it has been partially or<br />

fully installed, the unitized pinion seal will be damaged.<br />

Remove and discard the original unitized<br />

pinion seal and replace it with a new one.<br />

If a fork has been installed into the unitized pinion<br />

seal and then removed, the inner sleeve of<br />

the seal will be damaged. Install a new seal.<br />

8. Install the nut that fastens the fork or the<br />

flange to the input shaft. Hand-tighten the<br />

nut. Do not tighten the nut to the specified<br />

torque until the bearing cage and pump assembly<br />

is installed in the housing.<br />

9. Place the thrust washer into the pilot bore<br />

on the end of the helical drive gear. The oil<br />

groove in the thrust washer must face the input<br />

shaft flange. Install the helical drive gear<br />

and the thrust washer onto the input shaft<br />

so that the thrust washer is toward the input<br />

bearing cage. Figure5.74.<br />

THRUST<br />

WASHER<br />

Figure 5.74<br />

67

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