Operation and maintenance manual

Section 230-0130
SM 1409 Rev 1 9-05
1
21
23
7629 10 18
8
3
29451
11
17
14
13 15 14 16
19
20
12 22 23
24
28
27
26
22
21
25
28
27
26
PIN MTG. - LOWER
PIN MTG. - UPPER
SM - 3337
BODY SYSTEM - Body Cylinder
DESCRIPTION
Numbers in parentheses refer to Fig. 1.
There are two single stage, double acting body hoist
cylinders, cushioned at both ends of the stroke, on the
vehicle. The cylinder base end is connected to the
trailer frame and piston rod (2) eye end is connected
at the body. Single stage double acting means that
piston rod (2) can have oil applied to either end,
extending or retracting the piston rod.
The cushioning effect when the cylinder is being
extended is obtained by tapered spear (11) on piston
rod (2) passing through cushion sleeve (4). This
gradually slows piston (12) which in turn helps to
control destructive shock effects when piston (12)
reaches the full extent of its travel.
The cushioning effect when the cylinder is being
retracted is obtained by a tapered spear at the base
end of cylinder body (1) entering a cavity in piston rod
(2) through cushion ring (19). This gradually slows
piston (12) which in turn helps to control destructive
shock effects when piston (12) bottoms.
Cylinder mounting is by pins (24 & 25), spacers (26)
and spherical bearings (21) secured in place by
circlips (22). Spherical bearings (21) permit a limited
amount of cylinder misalignment.
REMOVAL
Numbers in parentheses refer to Fig. 1.
WARNING
To prevent personal injury and property
damage, be sure wheel blocks, blocking
materials and lifting equipment are properly
secured and of adequate capacity to do the job
safely.
1. Position the vehicle in a level work area, ensure the
body is fully lowered, apply the parking brake and
Fig. 1 - Sectional View Of Body Cylinder and Mounting
9 - 'O' Ring
10 - Lock Ring
11 - Cushion Spear
12 - Piston
13 - Piston Seal
14 - Bearing Ring
15 - Grub Screw
16 - Grub Screw
17 - 'O' Ring
18 - Backup Ring
19 - Cushion Ring
20 - Circlip
21 - Spherical Bearing
22 - Circlip
23 - Lube Fitting
24 - Lower Pin
25 - Upper Pin
26 - Spacer
27 - Washer
28 - Bolt
29 - Nylon Ring
1 - Cylinder Body
2 - Piston Rod
3 - End Cap
4 - Cushion Sleeve
5 - Circlip
6 - Rod Seal
7 - Wiper
8 - 'O' Ring