ZF Repair Manual: ZF63A, ZF63, ZF80A, ZF80-1A

4.3 Assembling input shaft seal

Apply thin coat of Loctite 574 on periphery of new radial

shaft seal rings (item 1, Fig. 4-3a and Fig. 4-3b) and

grease lips with STABURAGS NBU 30.

Put it onto the mounting mandrel.

Drive shaft seal uniformly into the housing by tapping

slightly onto the mounting mandrel.

NOTE

The sealing lip (A) on the shaft seal should point into

the inside of the housing. The radial shaft seal must

be adjusted so that the sealing lip runs on the

grounded surface of the shaft.

ALTERNATIVELY (Fig. 4-3c):

Smear loctite 574 on the outside diameter of the in-

put shaft seal using a roller.

Lubricate the inside lip with Kluber Staburags

NBU30 grease.

Insert the input shaft seal into input shaft (item 2)

using the appropriate bushing p/n 20.0012.01 (item 1).

Use mandrel p/n 20.0012.02 (item 3) to position the

input shaft seal in the correct way.

4.4 Mounting the breather filter

Due to the taper thread, the breather (item 1, Fig. 4-4)

need not to be coated with Loctite or equipped with a

sealing washer.

Tighten carefully during assembly (hand-tight).

Cheek leakage during a later test run. Retighten slightly

if it leaks.

FIG. 4-4

Repair Manual and Spare Parts List

Section 4: Assembly

1 mm

FIG. 4-3a

1 mm

FIG. 4-3b

FIG. 4-3c