Eaton 1 Series Repair Information

4
Introduction and Part Names
Introduction
This manual provides service information for Eaton Models 33 thru 64 Variable Motors. It’s divided into two main
sections: the first covers minor repairs and the second gives instructions for the complete disassembly, inspection
and reassembly of the motor.
The following recommendations apply to both minor and major repairs:
• Most repairs require the removal of the motor from the vehicle.
• Cleanliness is extremely important.
• Clean the port areas thoroughly before disconnecting the hydraulic lines.
• Plug the motor ports and cover the open end of the hydraulic line immediately after they’re disconnected.
• Drain the oil and clean the exterior of the motor before making repairs.
• Wash all metal parts in clean solvent.
• Use compressed air to dry the parts. Do not wipe them dry with paper towels or cloth; Lint in a hydraulic system
will cause damage.
• The compressed air should be filtered and moisture free.
• Always use new seals when reassembling hydraulic motors.
• For replacement parts and ordering information refer to parts list 6-132.
• Lubricate the new seals with a petroleum jelly like Vaseline before installation.
• Torque all bolts over gasketed joints, then repeat the torquing sequence to make-up for gasket compression.
• Verifying the accuracy of motor repairs on an authorized test stand is essential.
♦ Parts used as required.
Models 33 thru 64 Variable Motor Parts
Item
No.
Description Qty.
Item
No.
Description Qty.
1 Shaft Seal Kit 1 32 Trunnion Shims ♦
2 O-ring 1 34 Plug and O-ring 1
3 O-ring 1 35 Motor Housing 1
4 Mounting Flange Bolt 12 36 Servo Piston S/A 2
5 Shipping Strap 2 37 Retaining Ring 4
6 Mounting Flange S/A 1 38 Pin 2
7 Bearing Cup 1 39 O-ring 2
8 Dowel Pin 7 40 O-ring 2
9 Mounting Flange Gasket 1 41 Servo Sleeve 2
10 Drive Shaft S/A 1 42 Servo Sleeve Retainer 2
11 Replacement Bearing Kit ♦ 43 Cap Screw 6
12 Swashplate S/A 1 44 End Cover Gasket 1
13 Thrust Plate 1 45 Replacement Bearing Kit ♦
14 Rotating Group 1 46 Shaft Shims ♦
15 Piston and Slipper S/A 9 47 End Cover 1
16 Slipper Retainer Plate 1 52 End Cover Bolt 6
19 Retaining Strap and Bolts 2 53 End Cover Bolt 2
20 Cylinder Barrel 1 54 Valve Block Option 1
21 Bearing Plate 1 63 Hose Fitting ♦
22 Valve Plate 1 65 Hose ♦
23 Control Valve Option 1 71 Servo Piston with Spacer 1
28 Trunnion Bolt 6 72 Spacer Shims ♦
29 Trunnion S/A 2 73 Servo Piston Spacer 1
30 Replacement Bearing Kit ♦ 74 Spacer Bolt 1
31 O-ring 2

Eaton 1 Series Specifications

General

Brand	Eaton
Model	1 Series
Category	Engine
Language	English