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World Class
Customer Support
9813/0250-07
Publication No.
Issued by JCB Technical Publications, JCB Aftermarket Training, Woodseat, Rocester, Staffordshire, ST14 5BW, England. Tel +44 1889 591300 Fax +44 1889 591400
Service Manual
Backhoe Loader
Section 1 - General Information
Section 2 - Operator Manual
Section A - Attachments
Section B - Body and Framework
Section C - Electrics
Section E - Hydraulics
Section F - Transmission
Section G - Brakes
Section H - Steering
Section K - Engine
Section M - Electronic Control Systems
Section E25 - Hydraulics
Rams
Dismantle and Assemble
E25-21
E25-21
9813/0250-07 (E-24-04)
Dismantle and Assemble
Typical Ram
The procedures described below are applicable for the
following rams:
– Loader Shovel Ram
– Loader Lift Ram
– Stabiliser Ram
– Bucket Crowd Ram
– Boom Ram
– Extending Dipper Ram - if fitted
Dismantle
K Fig 13. ( T E25-23)
K Fig 14. ( T E25-23)
The numerical sequence shown on the illustration is
intended as a guide to dismantling.
For assembly the sequence should be reversed.
Place ram assembly on a locally manufactured strip and
rebuild bench as shown. K Fig 11. ( T E25-21)
Fig 11.
Slacken end cap 1 using special spanner (see Service
Tools), and remove the piston rod assembly 2 from the
cylinder.
!MWARNING
If air or hydraulic pressure is used to force out the
piston assembly, ensure that the end cap is securely
fitted. Severe injury can be caused by a suddenly
released piston rod.
HYD-1-2
Position piston rod assembly on bench in place of ram
cylinder. Remove seal 4 and wear rings 3 and 5 from piston
head.
Extract dowel 6 from the piston head using a metric screw
(M3, M4, or M6 depending on ram size) threaded into the
extractor hole.
Remove piston head from rod using special spanner (see
S