Brake Master Cylinder

at wheel cylinder or any appreciable quantity of

(7) Disconnect brake lines (11 and 12) from

fluid escapes at brake master cylinder removal.

inlet bolts (3) and catch escaping hydraulic brake

(1) Remove filler plug (17) and washer (18)

fluid in a container. Remove inlet bolts (3) and

and make certain master cylinder is filled with

washers (2). Do not reuse brake fluid.

hydraulic brake fluid, Refill as required during

(8) Remove two screws (10) and washers (9)

brake bleeding.

s e c u r i n g brake wheel cylinder (1) and remove

(2) Connect hose between bleeder screw (4) of

brake wheel cylinder from backing plate (8).

wheel cylinder (1) and a container which holds a

d. Installation. Reverse procedure in c a b o v e .

small amount of brake fluid.

Bleed brakes (para 4-57d). Adjust brakes as

(3) Depress brake pedal (31) slowly and open

described in a a b o v e .

bleeder screw. Just before brake pedal is completely

4.57. Brake Master Cylinder

depressed, c l o s e bleeder screw. Release brake

a. Inspection.

pedal.

(1) Inspect for secure mounting and leaks.

(4) Repeat instructions in (3) above three or

(2) Check boot for deterioration.

four times, or until bubbles cease to appear in

(3) Check for adequacy of fluid.

container. Close bleeder screw and disconnect hose.

b. Removal.

( 5 ) Repeat procedures in (2) through (4)

(1) Remove rear floor plate from tractor

above on wheel cylinder of other drive wheel.

chassis.

4-58. Service Brake Pedal Adjustment

(2) Disconnect brake line (16, fig. 4-39) from

brake master cylinder (15) and catch any escaping

brake hydraulic fluid in a container. Do not reuse

fluid.

(3) Remove nut (32), eccentric bolt (25) and

push rod bushing (26).

( 4 ) Remove two nuts (20) and screws (19)

securing brake master cylinder (15) and remove

brake master cylinder.

c. Installation. Reverse procedure in b a b o v e ,

and bleed brake lines (d below) if any appreciable

amount of hydraulic brake fluid escaped when the

brake master cylinder was removed.

d. Bleeding Brakes. B l e e d b r a k e s w h e n e v e r

hydraulic brake fluid lines have been disconnected

AND

WHEEL

BEARINGS

AND

SPRINGS

WHEELS,

TIRES,

Section XVI.

washers (15) securing grease cap (14) and remove

4-59. General

grease cap and gasket (13).

This section contains instructions for maintenance

(3) Bend up sides of lock (19) that secures

maintenance

organizational

which

operations

adjusting nuts (7) to spindle (1).

personnel are authorized to perform on the (rear)

(4) Remove adjusting nuts (7), lock (19), key

driving wheels and tires, front wheels and tires,

washer (6), and outer bearing cone (2).

inner tubes, and front wheel bearings, and front

(5) Remove wheel (10) with assembled hub

leaf springs.

(20), tire (11), and tube from spindle.

4-60. Front Wheels and Bearings

(6) Remove inner bearing cone (2) and oil seal

a. Removal.

(21) from spindle (1).

( 1 ) Block tractor securely and jack front

(7) Remove inner and outer bearing cups (3)

wheels off ground.

from hub (5).

( 2 ) Remove six screws (16, fig 4-40) and

4-48