September 2016
Service Manual
Hydraulic Power Unit
Part No. 38139
AWP Super Series • IWP Super Series
77
Hydraulic Power Unit
3-
1 H ydr aulic Power U nit
-
AC M odels (to SN AW P03
-
27389 and IWP03
-
5150)
3-1
Hydraulic Power Unit - AC Models
(to SN AWP03-27389 and IWP03-5150)
Index No. Description
Function
1
115-230V AC electric motor
Single phase
-
2850/3450 rpm, 50/60 Hz
2
Capacitor
Motor start circuit
3
Relief valve
Lift relief
4
Solenoid operated N.O. dump valve
Diverts pump output back to tank during motor start up
5
10V DC coil
Activates N.O. dump valve
6
Hydraulic tank
3 quarts / 2.8 liters
7
Drain plug
Drains hydraulic tank
8
Sight gauge
Hydraulic fluid level
9
Breather cap
Hydraulic tank vent/filler
10
Suction strainer
Filters hydraulic fluid
11
O
-ring
Seals tank
12
Pump
0.5 to 0.6 gallons per minute at 2000 psi /1.89 to 2.27
liters per minute at 138 bar
13
Check valve
Pump output
14
Motor seal
Seals motor from contaminants
15
Motor bearing
Aligns motor
shaft into pump
