CHAPTER 20. HYDRAULIC SYSTEM REPAIR INSTRUCTIONS

TM 5-2420-224-34

CHAPTER 20

HYDRAULIC SYSTEM REPAIR INSTRUCTIONS

OVERVIEW

This chapter contains maintenance instructions for repair of the hydraulic system. A list of sections

contained in this chapter is shown below.

Page

20-3

Front Hydraulic Pump Repair . . . . . . . . . . . . . . . . . . . . . . . . .

Section I.

20-6

Rear Hydraulic Pump Repair . . . . . . . . . . . . . . . . . . . . . . . . .

Section Il.

20-9

Hydraulic Suspension Lockout Motor And Pump Repair . . . . . . . . .

Section Ill.

20-14

Front Loader/Forklift Control Valve Repair . . . . . . . . . . . . . . .

Section IV.

20-33

Tilt And Latch Control Valve Repair . . . . . . . . . . . . . . . . . . . . .

Section V.

20-41

Backhoe Control Valve Repair.. . . . . . . . . . . . . . . . . . . . . . . .

Section VI.

`20-80

Backhoe Swing Cylinder Relief Valve Repair . . . . . . . . . . . . . . .

Section VIl.

20-82

Backhoe Stabilizer Control Valve Repair . . . . . . . . . . . . . . . .

Section Vlll.

20-88

Loader Boom Cylinder Repair . . . . . . . . . . . . . . . . . . . . . . . . .

Section IX.

20-94

Loader Bucket Rollback Cylinder Repair . . . . . . . . . . . . . . . . .

Section X.

20-100

Backhoe Boom Cylinder Repair. . . . . . . . . . . . . . . . . . . . . . . .

Section Xl.

20-105

Backhoe Swing Cylinder Repair. . . . . . . . . . . . . . . . . . . . . . . .

Section XII.

20-112

Backhoe Bucket Cylinder Repair . . . . . . . . . . . . . . . . . . . . . . .

Section XIII.

20-119

Backhoe Dipper Cylinder Repair . . . . . . . . . . . . . . . . . . . . . . .

Section XIV.

20-125

Backhoe Stabilizer Cylinder Repair . . . . . . . . . . . . . . . . . . . . . .

Section XV.

20-131

Backhoe/Crane Tilt Cylinder Repair . . . . . . . . . . . . . . . . . . . .

Section XVI.

20-142

Backhoe/Crane Latch Cylinder Repair . . . . . . . . . . . . . . . . .

Section XVII.

20-148

Hydraulic Oil Cooler Repair . . . . . . . . . . . . . . . . . . . . . . . . . .

Section XVIII.

20-151

Crane Valve Bank Repair . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section XIX.

20-155

Forklift Mast Assembly Repair... . . . . . . . . . . . . . . . . . . . . . .

Section XX.

20-171

Forklift Carriage Assembly Repair. . . . . . . . . . . . . . . . . . . . . . .

Section XXI.

20-176

Forklift Valve Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section XXII.

20-180

Forklift Tilt Cylinder Repair . . . . . . . . . . . . . . . . . . . . . . . . . .

Section XXIII.

20-1