Section XII. HYDRAULIC LIFT COMPONENTS

TM 10-3930-630-12

(3) Remove fuses (11 and 12) from fuseholder.

coolant temperature gage.

Remove screws (13), lockwashers (14) and nuts (15)

(7) Connect lead (1) to fuel gage and to connector

and remove fuseholder (16).

(2). Connector (4) is connected to the wire from the fuel gage

(4) Remove screws (17) and remove hourmeter

transmitter installed in the fuel tank.

Installation.

(18).

(5) Remove remaining gages and ammeter (19,

(1) Install instrument panel (26, fig. 4-6) on truck

20, 21 and 22) by removing attaching parts.

frame and secure panel with screws (23 and 24) and nuts

Assembly.

(25).

(1) Install coolant temperature gage (19, fig. 4-7),

(2) Connect panel ground wire (29, fig. 4-7) to

fuel gage (20), oil pressure gage (21) and ammeter (22) on

instrument panel and frame. Use lockwashers (26, fig. 4-7)

instrument panel and secure with screws, nuts and

when connecting ground wire.

NOTE

lockwashers.

(2) Install hourmeter (18) and secure with screws

Internal-external teeth lockwashers (26, fig.

(17).

4-7) must be installed to provide radio

(3) Install fuseholder (16) on rear of instrument

interference suppression.

panel and secure with screws (13), lockwashers (14) and nuts

(15). Install fuses (11 and 12) in fuseholder.

(3) Install transmission pressure gage (22, fig. 4-6)

NOTE

and connect tube leading from transmission to pressure gage.

Refer to figure 13 and check wire locations

(4) Install ignition switch (13) and plate (14).

and connections on wiring diagram.

(5) Install light switch (15) and plate (16). Connect

cable (18) to light switch. Install fuse (17) in fuseholder (21)

(4) Check tags on wiring harness (10) and connect

and connect fuseholder.

leads to instruments and fuseholder. Secure wiring harness

(6) Connect frame wiring harness (7) to panel

to panel with clamp (9) and screw (6), lockwasher (7) and nut

harness (10), fig. 4-6) and install clamps (1 and 5, fig. 4-6).

(8).

Secure clamp (5) with screw (2), lockwasher (3) and nut (4).

(5) Connect lead (4) to fuseholder and coolant

(7) Install choke control (8, fig. 4-6) and adapter

temperature gage. Use lockwashers (3) when connecting

(12). Secure adapter with screws (9), lockwashers (10) and

lead.

nuts (11). Install clamp (6) to secure choke cable.

NOTE

(8) Start truck and check operation of instruments.

Internal-external teeth lockwashers (3) must

be installed to provide radio interference

suppression.

(6)

Connect lead (5) between fuel gage and

Section XII. HYDRAULIC LIFT COMPONENTS

4-33. General

The hydraulic lift components provide the

When the cluster cylinder center cylinder has

means to elevate the carriage and forks. Hydraulic pressure

reached the limit of travel, hydraulic pressure is delivered to

induced into the lift cylinders extend the cylinder rods in

the single lift cylinder (fig. 4-8) (model ACC40-24PS180 only).

sequence to lift the carriage, and the masts to raise the load.

The single lift cylinder is attached to the intermediate mast at

Chains attached to the cluster cylinder (fig. 4-8)

the top and to the bottom of the outer mast. The rod extends

lift the carriage to the end of chain travel The outer cylinders

from the bottom of the cylinder, raising the cylinder and

of the cluster cylinder lift the crossheads and the chains roll

intermediate mast.

over the crosshead bearings, lifting the carriage.

As the intermediate mast rises, it carries the

When the outer cylinders reach the end of their

inner mast, cluster cylinder and carriage forks upward. When

travel, the center or inner cylinder rod is forced down raising

the single lift cylinder reaches the limit of travel, the carriage

the entire cluster cylinder, carriage and inner mast.

and forks are at their 180-inch elevation.

An interlock assembly, mounted on the inner

NOTE

mast serves to keep the masts in the proper sequencing

procedures. The masts telescope within each other providing

The above sequence applies to both model

a compact assembly.

ACC4024PS100 and ACC40-24PS180 lift

When the lift control lever is pulled to the rear,

trucks. On the ACC40-24PS100, the mast

or lowering position, the carriage and forks start to drop. The

at this point will have lifted the forks to their

load and/or carriage drop because of their own weight. Speed

100-inch limit.

of the lowering operation is governed by a flow regulator valve

(fig. 4-8).

4-18