Table of Contents
Advertisement
www.WorkshopManuals.co.uk
Section E
87 - 3
Dismantling and Assembly
- Slew Ram
Assembling (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.
Install cylinder onto the rod assembly, make sure that the
cylinder is fitted square to the rod assembly. Firmly push the
cylinder over the piston head seals.
Apply JCB Threadlocker and Sealer (High Strength) to first
three threads of cylinder, torque tighten the cylinder 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.
Position pipe assembly in correct position and torque tighten
probe assembly 2 to 75Nm (55 lbf ft; 7.6 kgf m). DO NOT
over-tighten the probe.
Make sure seals 19 and 21 are fitted the correct way as
shown.
Torque Settings
Item
Nm
kgf m
11
405
41.3
6
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
87 - 3
Dowel
Drill
Depth Y
22/23
27/28
Issue 1
Advertisement
Table of Contents
