5-56
Assemble the center pivot group by reversing the order of disassembly while paying close attention
to the following.
Put the dust seal (12,13) into cover (2, 3, 17, 18).
Apply grease to the lip of the dust seal. Insert the dust seal so that the dust seal lip faces out and
punch four places on the outer circumference of the seal to lock it.
Lower the temperature of the lower bearing cup to -75
±
5˚C (-103
±
9˚F ) and install it to front
frame until it contacts the bottom of the frame.
Place the cover (3, 18).
Coat lightly with oil and install lower bearing in bore in front frame. Coat lightly with oil and install
upper bearing in bore in upper front frame.
Place the cover (2, 17) and hold in place with bolt (19). At this time, adjust shims (4, 5) to press
the shoulder of bearing (1) against retainer.
ㆍ
Adjustment method of clearance A
Adjustment method of clearance A
Install bearing (1) and cover (2, 17) without shim (4, 5)
Install four of bolt (19) so that each bolt is separated by 90 degrees.
ㆍ
Tightening torque : 0.8~1.0 kgf
ㆍ
m (5.8~7.2 lbf
ㆍ
ft)
Adjust shims (4, 5) in order to control the clearance A.
ㆍ
Clearance A : Below 0.1 mm
ㆍ
Shim thickness : 0.1 mm, 0.5 mm
Measure bearing preload and confirm the value.
ㆍ
Bearing preload : 0.6~1.0 kgf
ㆍ
m (4.3~7.2 lbf
ㆍ
ft)
(1)
※
(2)
(3)
(4)
(5)
①
②
③
ASSEMBLY
ASSEMBLY
4)
4)
25
26
6
10
28
2
4,5
19,20
3
13
22
23,24
UPPER
16
1
7
8
12
17
18
6
21
14,15,27
9
1
19,20
4,5
30
29
29
30
11
UPPER
LOWER
Clearance A
Clearance B
75795SE31
Summary of Contents for HL955
Page 557: ...7 6 MEMORANDUM MEMORANDUM ...
