Operation and maintenance manual

5
Section 260-0090
SM 1981 4-00
INSPECTION
Numbers in parentheses refer to Fig. 1.
1. Inspect air lines, shock absorbers (15 & 26),
compressor (21), level controller (28) and air spring (30)
for leaks and damage and replace if required.
2. Check all brackets and frame for cracks and/or
damage. Repair or replace as necessary.
3. Check springs for fatigue or damage and replace as
required.
ASSEMBLY
Numbers in parentheses refer to Fig. 1.
Note: Tighten all fasteners without special torques
specified to torques listed in Section 300-0080,
STANDARD BOLT AND NUT TORQUE
SPECIFICATIONS.
1. Position seat assembly onto suspension base. Hold
captive nuts using a suitable spanner and install rear
allen screws (33). Tighten allen screws (33) to a torque
of 25 Nm (18 lbf ft).
2. Pull up horizontal adjustment (B) lever and slide seat
assembly rearwards. Hold captive nuts using a suitable
spanner and install front allen screws (33). Tighten
allen screws (33) to a torque of 25 Nm
(18 lbf ft).
3. Install seat cushion (3) to seat frame (1) and secure
using screws (4).
4. Install backrest cushion (2) to seat frame (1) and
secure using screws (5).
5. Refit backrest (6) to seat frame (1).
6. Position lap belt (9) to seat assembly and secure
using nuts (10) and spacers (11) as removed at
'Disassembly'. Tighten nuts (10) to a torque of 50 Nm
(36 lbf ft). Refit covers (7 & 8).
7. Position seat assembly onto seat base (34) and
secure using bolts (37), washers (38), lockwashers (39)
and nuts (40).
INSTALLATION
Numbers in parentheses refer to Fig. 1.
Note: Tighten all fasteners without special torques
specified to torques listed in Section 300-0080,
STANDARD BOLT AND NUT TORQUE
SPECIFICATIONS.
WARNINGS
To prevent personal injury and property
damage, be sure wheel chocks, blocking
materials and lifting equipment are properly
secured and of adequate capacity to do the job
safely.
1. Using suitable lifting equipment, position seat
assembly on the cab wall and secure with bolts (35)
and washers (36).
2. Reconnect harness at the rear of the seat.
3. Place battery master switch in the 'On' position, start
the engine and charge the air system. Check seat for
proper operation, refer to 'Operation'.
4. Remove wheel chocks from road wheels.
MAINTENANCE
Numbers in parentheses refer to Fig. 1.
The care of the upholstery on seat cushion (3) and
backrest cushion (2) is a relatively simple, but
important matter. Accumulation of dirt on the surface
eventually turns into a hard gritty substance which cuts
into the surface of the upholstery.
To clean seat cushion (3) and backrest cushion (2),
use warm water and a mild soap, such as Castile.
Work up thin soap suds on a piece of soft cloth and rub
the upholstery briskly. Remove the suds with a damp
cloth, using no soap, and finish by wiping the
upholstery dry with a soft, dry cloth.
Lap belt (9) assembly should be inspected by the user
on a regular basis. Replace lap belt (9) immediately if
hardware is worn or damage, straps are nicked or
frayed, buckle is not functioning correctly, loose
stitching is found, or if the strap material has lost
strength due to the effects of ultraviolet rays.
Note: Regardless of appearance, lap belt (9) must be
removed and replaced at least once every three years.
Operator's Compartment - Driver Seat and Mounting