820-228 25
Displacement
Pump Repair
11. Place
a new o-ring (1
16*) firmly in the cylinder
groove. See Fig. 22.
12.
Coat the piston rod and packings with oil. Carefully
slide the assembly
into the top of the cylinder
(115)
. See Fig. 22.
13.
Put the manifold upside down in a vise. Fully
thread the jam nut (1
17) onto the cylinder (1
15).
Guide the rod/cylinder assembly down through the
manifold (101). Screw the cylinder (1
15) into the
manifold. See Fig. 22.
Fig. 22
01072A
1
3
2
102
101
116*
117
115
118
107
Torque
jam nut (1
17)
to 73 ft–lb (98 N.m)
T
orque cylinder (1
15)
into manifold (101) to
53 ft–lb (71 N.m)
Torque
intake valve (1
16)
into
cylinder (1
15) to
53 ft–lb (71 N.m)
1
2
3
4
Piston assembly
4
14. Place
the ball guide (120), stop pin (122) and ball
(121*) in the cylinder (1
15). Screw the intake valve
into the cylinder and torque to 53 ft-lb
(71 N.m). This will also properly torque the cylinder
into the manifold. See Fig. 23.
15. T
orque the cylinder jam nut (1
17) to 73 ft-lb
(98
N.m). See Fig. 22.
16.
Install the pump. See page 22.
Fig. 23
1
3
4
2
01073
107
123
102
104*
106*
101
117
112*
114*
108*
122*
121*
109*
*103
*105
*116
111
*113
115
120
*119
118
Leather
packings
Poly packings
Lips of V–packings
must face down
Lips of V–packings
must face up
5
T
orque to 53 ft–lb
(71 N.m)
1
3
2 3
2 4
1 4
5
110
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