DCE80-100E
Technical Handbook
Hydraulic cylinders
Service
38
P.
Group 70
TDCE01
04GB
Repairs to leaking hydraulic cylinders – replacing
the seal
Se also separate information
Supplement Technical Handbook, Hydraulic cylinders
Publ. No. 920937-9279
General instruction applicable to all cylinders
If necessary, see Group 80 for instructions on the dismantling of
the fork carraige and mast.
1.
Remove the relevant hydraulic cylinder. Fit immediately pro-
tective caps or plugs to the hydraulic cylinder and hose con-
nections.
2.
Take the cylinder to the workshop, drain any oil remaining in
it and carefully wash the outside of the cylinder.
3.
Dismantle and assemble the cylinder in accordance with the
instructions for that particular cylinder type.
4.
Removing the seals:
– Whenever repair work is carried out on hydraulic cylin-
ders, all seals, scraper rings, etc. must be replaced.
– Take extreme care when removing the seal in the cylinder
head, to avoid scratching the bottom of the groove, since
oil leakage will otherwise occur in the future. Use a screw-
driver as shown in the figure.
– Clean all components very throughly.
5.
Fitting of lip seals:
– Fit the seal in the cylinder head with the lip facing inwards
towards the piston. Oil the seal and press it in by hand.
N.B. Don’t use any tools, since the seal may otherwise be
scratched. Even a minute scratch may cause the seal to
leak.
6.
Fitting the piston seal:
– All piston seals are of the same design and consist of five
components, i.e. a centre sealing ring, two backing rings
and two guide rings.
– Dismantle the piston seal and start by fitting the sealing
ring onto the piston, and then fit the backing rings and the
guide rings. All of this must be done by hand.
IMPORTANT!
Never use compressed air for re-
moving the piston from the cylinder.
You could sustain serious injuries.
1. Screw driver
2. Lip seal
3. Scraper ring
1. Sealing ring
2. Backing rings
3. Guide rings
4. Piston head
Summary of Contents for DCE80-100E
Page 2: ......
Page 30: ...DCE80 100E Technical Handbook Empty page 16 P Group 10 TDCE01 04GB ...
Page 43: ......
Page 44: ......
Page 45: ......
Page 46: ......
Page 47: ......
Page 48: ......
Page 49: ......
Page 50: ......
Page 51: ......
Page 52: ......
Page 53: ......
Page 54: ......
Page 55: ......
Page 56: ......
Page 57: ......
Page 58: ......
Page 59: ......
Page 60: ......
Page 61: ......
Page 62: ......
Page 63: ......
Page 64: ......
Page 65: ......
Page 66: ......
Page 67: ......
Page 68: ......
Page 69: ...A35093 0200 04 ...
Page 70: ......
Page 71: ......
Page 72: ......
Page 73: ......
Page 74: ......
Page 75: ......
Page 76: ......
Page 77: ......
Page 78: ......
Page 79: ......
Page 80: ......
Page 81: ......
Page 82: ......
Page 83: ......
Page 84: ......
Page 85: ......
Page 86: ......
Page 87: ......
Page 88: ......
Page 89: ......
Page 90: ......
Page 91: ......
Page 92: ......
Page 111: ......
Page 112: ......
Page 114: ...DCE80 100 Technical Handbook Contents 2 P Group 30 TDCE01 04GB ...
Page 131: ...DCE80 100E Technical Handbook 18 P Group 30 TDCE01 04GB Volvo TAD720VE ...
Page 162: ......
Page 235: ...DCE80 100E Technical Handbook Empty page 43 P Group 70 TDCE01 04GB ...
Page 242: ...DCE80 100E Technical Handbook Empty page 50 P Group 70 TDCE01 04GB ...
Page 243: ...4YFP RS 7YTTPIQIRX HVEYPMG PMRHIVW 8IGLRMGEP ERHFSSO PP 8VYGOW ...
Page 244: ......
Page 246: ......
Page 259: ......
Page 260: ... 4EVXIO SQTER EPQEV RHYWXVMIW 7ZIVMKI 7 0NYRKF 7 IHIR XIP JE OEPQEVMRH GSQ ...
Page 304: ...DCE80 100E Technical Handbook Empty page 2 P Group 90 TDCE01 04GB ...
Page 317: ...DCE80 100E Technical Handbook Empty page 15 P Group 90 TDCE01 04GB ...