User's Manual
309024 21
Service
Removing the Lever Arm from the VRHC
Frame
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 15.
1. Flush the entire system with a solvent which is
compatible with the fluid being pumped. Discon-
nect the air line and relieve the pressure.
2. Remove the safety panels (38,39,40). See Fig. 10.
3. Loosen the two setscrews (59) holding the primary
displacement pump pin (35c) in the lever arm (49).
See Fig. 11. The setscrews must be backed out far
enough to clear the countersinks of the pin. Tap
the pump pin out of the lever arm and bearing.
4. Slide the primary pump out of the lever arm (49)
slot and save the two nylon spacers (27c).
5. Slowly lower the pump to the floor until it supports
itself with the lower bearing (14d). See Fig. 17 on
page 27.
6. Push down on the secondary displacement pump
end of the lever arm (49) at point (JJ) until it is at
the bottom of the stroke. See Fig. 11.
7. Remove the two top capscrews (16a) from the
index clamp (30).
8. Raise the lever arm (49) slowly. Lower the
secondary pump to the floor until it supports itself
with the lower bearing.
9. Loosen the two setscrews (17) located above the
ends of the frame pin (33). The setscrews must be
turned out far enough to clear the countersinks of
the pin.
10. Using a long punch and hammer, gently drive the
frame pin (33) out from one end until it can be
pulled out.
CAUTION
Do not drop the pin; dents will make reassembly diffi-
cult.
11. Remove the punch and lift the lever arm (49) off
the VRHC frame.
12. Loosen the two pivot bearing locknuts (2) and turn
the bearings (15) out of the housing (122). The
bearings should be only hand tight. If they are
tighter, use a wrench on the flats of the bearing
(15) to unscrew the bearing from the frame.
Fig. 10
49
39
1
12
38
1
40
02366A
Fig. 11
59
121
33
35c
27c
2
15
34a
17
49
31
16a
30
JJ
02372