POSITION INDICATION MARKS

Fig. 29—Hydraulic Unit in Position for Adjustments

OM-4 16

(2) ADJUSTMENT OF FORCE REQUIRED TO MOVE

HYDRAULIC TOUCH CONTROL LEVER. This is accomplished

by tightening or loosening the nut on the end of the hydraulic touch

control lever shaft (fig. 17). Tightening the nut increases the force

required to move the lever. It should be set so that it requires a pull

of 4 to 5 pounds on the knob to move the lever.

b. Internal Adjustments. The internal adjustments have been

carefully made at the factory. However, it may be necessary to

readjust the hydraulic unit after an overhaul. These internal adjust-

ments must be made before the unit is installed on the tractor.

The first step in making the internal adjustments is to check the

two external adjustments as outlined above, and adjust if necessary.

(1) Support the unit in a vise in a vertical position with the control

spring down as shown in fig. 29.

The lift arms must be supported in the fully raised position as

indicated by the marks on the lift arms and housing (fig. 29).

§ 143 b. (1)

3730-47J

98

CONSTANT DRAFT SPRING ADJUSTMENT NUT

CASTLE NUT

SELF LOCKING

NUT

CONTROL ARM

POSITION CONTROL

SPRING ADJUSTMENT BOLT

POSITION

CONTROL SPRING

POSITION CONTROL

SPRING LOCK NUT

CAM

3/4

INCH

POSITION CONTROL PIN