Service Manual #513721
30
U421-I2A & U431-I2A Model Machines
Quantity
Part
Number
Description
U431 U421
Crank Arm Roller Assy (Requires #
) (Cab)
2
2
Valve Head Only w/Tubes (Pump) (Cab)
2
2
Motor - Pump (w/Capacitor) (Cab)
2
2
Nut - Motor Mounting (Cab)
8
8
Screw - Rocker Arm (Cab)
2
2
Set Screw - Pulley (Cab)
2
2
Screw - Shoulder (Crank Arm Roller Assembly) (Cab)
2
2
Screw - Thumb (Cover Clamp) (Cab)
8
8
Seal - Bumper (Piston) (Pump) (Cab)
2
2
Tubing - 1/4” ID - Clear - Air Line (Per Inch) (Cab)
17x2
17x2
Check Valve - Air Line - Red/White
2
2
Washer - Lock - Motor Mounting (Cab)
8
8
Wrench - Allen (Cab)
2
2
Spring - Check Valve (Pump) (Cab)
2
2
Needle Valve w/O-Ring (Pump) (Cab)
2
2
Screw - Air Filter Retainer (Cab)
2
2
Valve Guide (Pump) (Cab)
2
2
O-Ring - Needle Valve (Pump) (Cab)
2
2
Screw - Valve Head (Cab)
10
10
O-Ring (Pump Cylinder Sleeve) (Cab)
2
2
Reed Valve (Pump) (Cab)
2
2
Cylinder Sleeve (Pump) (Cab)
2
2
Spring - Piston (Cab)
2
2
Piston Spring Seat (Cab)
2
2
Piston (Pump) (Cab)
2
2
Ball Bearing - Single (Pump Rocker Arm) (Cab)
2
2
Set Screw - Eccentric (Cab)
2
2
Washer - Crank Arm - Nylon (Cab)
2
2
Filter - Air (Pump) (Cab)
2
2
O-Ring (Piston) (Pump) (Cab)
2
2
Capacitor - Pump Motor (Cab)
2
2
Screw - Crank Arm (Cab)
2
2
Crank
Arm
(Cab)
2
2
Pulley - Large (Pump) (Cab)
1
1
Eccentric
(Cab)
2
2
Knob - Crank Arm Overrun Setting (Cab)
2
2
Dial - Crank Arm Overrun Setting (Cab)
2
2
Pointer - Crank Arm Overrun Setting (Cab)
2
2
Dowel Pin and Collar Assembly (Cab)
2
2
Flange Bearing - Rocker Arm (Cab)
4
4
Wick - Rocker Arm (Cab)
2
2
Pulley - Small (Cab)
2
2
Belt (Pump) (Cab)
1
1
Ball Bearing (Roller Assembly / Crank Arm)
2
2
Valve Body - Outer (Check Valve Assembly) (Cab)
2
2
Bumper Ring (Piston) (Pump) (Cab)
2
2
Air Filter Retainer - Top (Cab)
2
2
Air Filter Retainer - Bottom (Cab)
2
2
Washer - Air Filter Retainer (Cab)
2
2
Screw - Air Filter (Cab)
2
2
Rocker
Arm
(Cab)
2
2
Roller Carrier Assembly Kit (Cab)
-
-
Pump Assembly w/Motor
2
2
Pump Body Casting (Cab)
2
2
Cover - Clamp (Two Piece Black) (Cab)
2
2
5.8
PUMP PARTS (CONTINUED)
Summary of Contents for STOELTING U421-I2A
Page 1: ...Model U421 I2A U431 I2A SERVICE MANUAL Manual No 513721 Rev 0...
Page 2: ......
Page 44: ...Service Manual 513721 38 U421 I2A U431 I2A Model Machines...
Page 46: ...Service Manual 513721 40 U421 I2A U431 I2A Model Machines U421 48I2A 6 2 WIRING DIAGRAMS...
Page 47: ...Service Manual 513721 41 U421 I2A U431 I2A Model Machines U421 409I2A...
Page 48: ...Service Manual 513721 42 U421 I2A U431 I2A Model Machines U421 109I2A...
Page 49: ...Service Manual 513721 43 U421 I2A U431 I2A Model Machines U431 48I2A...
Page 50: ...Service Manual 513721 44 U421 I2A U431 I2A Model Machines U431 38I2A...
Page 51: ...Service Manual 513721 45 U421 I2A U431 I2A Model Machines U431 18I2A...
Page 52: ...Service Manual 513721 46 U421 I2A U431 I2A Model Machines U431 409I2A...
Page 53: ...Service Manual 513721 47 U421 I2A U431 I2A Model Machines U431 309I2A...
Page 54: ...Service Manual 513721 48 U421 I2A U431 I2A Model Machines U431 109I2A...
