Tronair 02-7802C0111, Operation & Service Manual

Page: 13 / 82

Model: 02-7802C0111 & 02A7802C0111 (with Air Pump)
12 Ton (10.88 Metric Ton) Single Stage Jack
04/2008 | Rev. 01 Page | 10
10.0 TROUBLE SHOOTING
Ram will not rise or rises erratically
P
ROBABLE
C
AUSE
C
ORRECTIVE
A
CTION
High pressure leaks (at joint, plugs or tubing) Re-tighten or repair
Leaky discharge check valve
Open release valve. Pump rapidly to dislodge.
Or repair pump.
Leaky ram O-ring packing Replace packing (Reference Parts List

K-1050 Kit)
Leaky release valve Tighten release valve (See Appendix III)
Leaky pump O-ring packing Repair pump (See Appendix III)
Lack of oil
Refill reservoir with oil (MIL-PRF-5606).
Check system for leaks.
Sticking inlet check valve
Open release valve. Pump rapidly to dislodge.
Or repair pump.
Air in hydraulic system
Bleed system. With rams fully retracted, open release valve.
Pump rapidly and close release valve.
Jack will not lower
P
ROBABLE
C
AUSE
C
ORRECTIVE
A
CTION
Ram lock nut not loosened Rotate nut as ram is lowered
Broken pump release valve Repair pump (See Appendix III)
Bent ram Replace suspected ram assembly
O-ring (Pinched or rolled)
Replace packing (See Parts List

K-1050 Kit)
Check cylinder and rams for rust and pitting on inside diameter
walls.
(See Section 9.0 Maintenance/General)
11.0 PROVISION OF SPARES
Recommended Spares to be kept on hand:
K-1050
Kit, Ram Seal Replacement
HK-1685 Kit, Repair Fluid Seal (Air Option only)
HK-1686 Kit, Repair Air Seal (Air Option only)
K-3441 Kit, Pump Seal Replacement
Spare parts may be obtained from the manufacturer:
TRONAIR , Inc. Telephone: (419) 866-6301 or 800-426-6301
1 Air Cargo Pkwy East Fax: (419) 867-0634
Swanton, Ohio 43558 USA E-mail: sales@tronair.com
Website: www.tronair.com
12.0 PARTS LIST
Reference following pages for Parts Lists and Illustrations
When ordering Replacement Parts/Kits, please specify Model & Serial Number of your product.
13.0 IN-SERVICE SUPPORT
Contact Tronair for technical services and information.