User's Manual

20 309024
Service
Required Service Tools
Tool Use for
3/32”–90 or
T-handle hex key
All setscrews
3/4” open end wrench Clamp bolts and fluid
hose on pump outlet
1” open end wrench Locknuts on capscrews
9/16” open end wrench Tie rod nuts
1/2” open end wrench Loosening tie rods from
motor base
1–1/8” open end wrench Pivot bearing locknuts
Adjustable open end
wrench
Tightening connecting
rod to pumps
Needle nose pliers Bending and pulling
cotter pins
Medium slotted
screwdriver
Removing shields
Small hammer and 6”
punch
Tapping out pins
Bearing and Pump Lubrication
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. Relieve the pressure.
2. Insert one end of the nylon hose (52) into the
wet-cup.
3. Pour Throat Seal Liquid (44) into the hose until the
wet-cup is full.
4. Lubricate the VRHC periodically with Graco Gear
Reducer Oil (43). If the pump is operating continu-
ously at 60 cycles/min., lubricate at the points
shown in Fig. 9 once every five days.
Service instructions are in the manuals for the sepa-
rate components. See the chart on page 18.
Air Lubrication (Air Operated Motors Only)
If your air supply is very dry, install air line lubricators
between the air regulators and pumps for automatic air
motor lubrication. See Accessories in Configurator
Product Order Form 309025 for a lubricator.
02371A
Fig. 9
1
1
1
1
1
Lubricate periodically with
Graco Gear Reducer Oil
Detecting Bearing and Pin Wear
Audio Detection
When a bearing fails, it makes a knocking noise each
time the pump changes stroke. Shut off the system
immediately to avoid serious damage. Replace the
bearing(s).
Visual Detection
Check the movement of the lever arm (49) by watching
it through the opening in the safety panel (39). If it
bounces, shut off the system immediately to avoid
serious damage. Replace the bearing pin.