Drilling Details For Piston Head Retention - jcb 214e Service Manual

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Section E
85 - 3
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).
Remove all swarf and contamination, insert the
d
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 t im es vary ac c o rd ing t o t he am b ient
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
7 405 41.3
1 678 69.2
9803/3280
Hydraulic Rams
lbf ft
300
500
Purchased from www.WorkshopManuals.co.uk
Hydraulics

DRILLING DETAILS FOR PISTON HEAD RETENTION

Y
(all dimensions in mm)
Ram Dowel
Size Size
80 x 50 6Ø x 20
70 x 40
90 x 50 8Ø x 25
100 x 60
110 x 60 12Ø x 30
110 x 65
120 x 65 12Ø x 35
130 x 75
Section E
X
A263750
Guide Guide Dowel
Drill Ø Drill Drill Ø X
Depth
4 21 6.02/6.10
5 24 8.02/8.10
8 28 12.02/12.10 32/33
8 33 12.02/12.10 37/38
85 - 3
Dowel
Drill
Depth Y
22/23
27/28
Issue 1