Dismantling and Assembly:
- Loader Lift Ram
- Loader Shovel Ram
- Boom Ram
- Bucket Ram
- Stabiliser Ram
Assembly (continued)
b Use an undersized diameter drill as a guide and drill
into the piston rod to the required depth (see table),
make sure the drill has centred correctly on the
'centre mark' made at step 5a.
c Use the correct size diameter drill to suit the dowel
and drill to the required depth (see table).
d Remove all swarf and contamination, insert the
dowel.
Position cylinder on bench and install rod assembly into
cylinder.
Apply JCB Threadlocker and Sealer (High Strength) to first
three threads of cylinder, torque tighten the end cap to 678
Nm (500 lbf ft).
Note: If hydraulic oil contacts the uncured JCB Threadlocker
and Sealer (High Strength) a weakening of the bond will
result. Cure times vary according to the ambient
temperature. Allow a minimum of 2 hours between assembly
and filling the ram with oil.
Note: Cold weather operation. When operating in conditions
which are consistently below freezing, it is recommended
that the rams are operated slowly to their full extent before
commencing normal working.
Torque Settings
Item Nm kgf m lbf ft
7 405 41.3 300
1 678 69.2 500
DRILLING DETAILS FOR PISTON HEAD RETENTION
(all dimensions in mm)
Ram Dowel Guide Guide Dowel Dowel
Size Size Drill Ø Drill Drill Ø X Drill
Depth Depth Y
80 x 50 6Ø x 20 4 21 6.02/6.10 22/23
70 x 40
90 x 50 8Ø x 25 5 24 8.02/8.10 27/28
100 x 60
110 x 60 12Ø x 30 8 28 12.02/12.10 32/33
110 x 65
120 x 65 12Ø x 35 8 33 12.02/12.10 37/38
130 x 75
85 - 3
Section E
Hydraulics
9803/3280
Section E
85 - 3
Issue 1
Hydraulic Rams
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