Repairing Hydraulic Parts; Dismantling The Head-Valve Units - Interpump Group 70 VHT Serie Manual De Reparación

Proceed to determine the shim pack, using the table below:
Detected Measurement
From: 0.05 to: 0.10
From: 0.11 to: 0.20
From: 0.21 to: 0.30
From: 0.31 to: 0.35
From: 0.36 to: 0.45
From: 0.46 to: 0.55
From: 0.56 to: 0.60
From: 0.61 to: 0.70
Once the type and number of shims have been determined
using the table, check the following: assemble the shim pack
on the indicator side cover centring (Fig. 15), secure the cover
to the casing, following the procedure in par. 2.1.2, and tighten
the screws to their recommended torque.
Check that the shaft rotation stall torque is between 4 Nm and
6 Nm.
If this torque is correct, connect the con-rods to the bend
shaft and to the next stages. If it is not, redefine the shim pack,
repeating the operations.
2.2

REPAIRING HYDRAULIC PARTS

2.2.1

Dismantling the head-valve units

Operations are limited to inspection or replacement of valves,
if necessary.
Proceed as follows to extract valve units:
Shim Type # pieces
/ /
0.1 1
0.1 2
0.25 1
0.35 1
0.35 1
0.10 1
0.25 2
0.35 1
0.25 1
Fig. 15
Fig. 16
18
- Unscrew the 7 M10x25 valve cover fixing screws and
remove the covers (Fig. 16, Fig. 16/a).
- Remove the valve plugs using an extractor or an M6
threaded bar (Fig. 16).
- Remove the valve units using pliers (Fig. 16/a).
If the suction and outlet valve seats remain
stuck on the head (for example because of
incrustations due to prolonged lack of use of the
pump), proceed as follows:
- use the extractor hammer (code 26019400
combined with the tool code 27513700, as
shown in Fig. 16/b.
- To dismantle the suction-outlet valve units, use basic tools
as indicated in Fig. 17.
Fig. 16/a
code 26019400
code 27513700
Fig. 16/b
Fig. 17