1643725H (404416)
2020-09-28
12
1643725H (404416)
2020-09-28
13
CAUTION: BE CAREFUL OF BRAKELINES, WIRING, ETC. INSIDE THE
TRUCK FRAME WHEN DRILLING THE TRUCK FRAME.
Drill 17/32” holes in the truck frame and bolt the reservoir/valve assembly in place using 1/2 x 2 3/4 cap
screws and hex lock nuts, tightening to 90 to 100 lb-ft.
For rated performance, the voltage at the power unit must be a minimum of 12VDC. This should be
measured between the large terminal of the start solenoid (where the battery cable is connected) and the
power unit base, where it is bolted to the mounting bracket. NOTE: Grounding of the power unit is just
as important as the installation of the positive battery cable. It is easier to get a good ground by using a
second battery cable.
Connect the large terminal on the motor start solenoid to the positive terminal on the battery with a #0
gauge battery cable. Connect the negative terminal on the battery to the grounding hole on the power unit
with a #0 gauge battery cable. See Figure 8. Check the voltage between the large terminal on the start
solenoid and the power unit base.
ELECTRIC PUMP INSTALLATION - DOUBLE-ACTING
Install 9/16 ORB x 3/4 JIC 90° swivel adapters in both work ports on the electric pump. If needed, for
good hose routing, install 3/4 JIC x 3/4 JIC 90° swivel adapters to both of these adapters. Connect the
shorter 3/8 ID hose with 3/4 JIC fittings from the ‘C1’ port on the pump to the base end port on the cylin
-
der. Connect the longer 3/8” ID hose with 3/4 JIC fittings from the ‘C2’ port to the rod end port.
NOTE: The ‘C2’ port is the power down port and has only 500 PSI maximum pressure.
ADD HYDRAULIC OIL
Use a quality hydraulic fluid of 150 SSU @ 100° F which contains corrosion and oxidation inhibitors
and a foam depressant. This is approximately the equivalent of SAE 10W or lighter weight oil. Dexron
automatic transmission fluid should be used in the electric pumps. Fill the hydraulic reservoir using the
following table.
KEEP THE OIL CLEAN. USE CLEAN CONTAINERS, FUNNELS AND
OTHER EQUIPMENT!
ELECTRIC PUMP MOUNTING - GENERAL
The electric power unit should be mounted behind the cab, either to a mounting bracket in the subframe
or to mounting brackets bolted to the truck frame as shown in Fig. 7. If using the bracket in the subframe,
bolt the double-acting power unit with the motor towards the passenger’s side to the bracket provided
using 3/8 x 1 cap screws and flat washers , tightening to 24 to 26 lb-ft. Bolt the single-acting power unit
with the motor towards the driver’s side to the bracket provided using 3/8 x 1 cap screws and flat washers.
, tightening to 24 to 26 lb-ft Insert the 3 x 5 rubber pad under the end of the tank and clamp the tank to the
mounting bracket with the 33” long cable tie.
If separate mounting brackets are used, chose the location for mounting the power unit, bolt one mount-
ing angle to the power unit using the 3/8 x 1 hex head cap screws, tightening to 24 to 26 lb-ft. Clamp the
mounting bracket to the truck frame. Clamp the second mounting angle to the truck frame so it supports
the far end of the reservoir. Insert a rubber pad between the mounting angle and the reservoir; and secure
it in place with a tie strap. Mark the truck frame for drilling using the pump mounting angles as guides.
Fig. 7
ELECTRIC POWER UNIT
MOUNTING
ANGLE
RUBBER PAD
TIE STRAP
Fig. 8
Locate the control in the cab and route the cable out of the cab through a hole in the back of the cab. Con-
nect the control to the electric power unit using the 4-pin connector set.
After completing the wiring, install the motor start switch cover over the start switch and secure with a
tie strap.
Start Switch
Cover
Fig. 9
Connect Ground Cable
Double-Acting
Power Unit
Connect Power Cable
Hyd System
Reservoir Size
Fluid Required
Initial Fill
Gear Pump w/ Valve/Tank
6 Gal
5.5 Gallons
4 Gallons
Electric Double-Acting
7.5 Quarts
13.5 Quarts
7.5 Quarts
