General Pump HTCK4050S - Manual (Page 10)

GENERAL PUMP
A member of the Interpump Group
HTCK4050S
Page 10
Proceed to determine the shim pack, using the table below:
C) Determining the shim pack:
Perform the operation while the piston/con-rod units are assembled, the con-rod caps are disconnected and
the con-rods are pushed outwards. Insert the pump shaft without tab into the casing, making sure the PTO
shank comes out of the correct side.
Secure the PTO side flange to the casing, taking care with the lip seal as described previously and tighten
the fixing screws to the recommended torque.
Then feed the flange on the indicator side without shims in the cover and start to move it closer, manually
screwing the M4x40 service screws in equally, with small rotations such at to move the cover in slowly and
correctly.
At the same time, check that the shaft rotates freely by turning it manually.
Continuing the procedure in this way, a sudden increase in difficulty during shaft rotation will soon be
experienced.
At this point, halt the forward movement of the cover and loosen the fixing screws completely.
With the aid of a thickness gauge, measure the clearance between the side cover and pump casing (fig. 14).
Ref 300934 Rev.A
09-13
Detected
Measurement
Shim
Type
Number of
Pieces
From: 0.05 to 0.10 / /
From: 0.11 to 0.20 0.1 1
From: 0.21 to 0.30 0.1 2
From: 0.31 to 0.35 0.25 1
From: 0.36 to 0.45 0.35 1
From: 0.46 to 0.55
0.35 1
0.10 1
From: 0.56 to 0.60 .25 2
From 0.61 to 0.70
0.35 1
0.24 1
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 centering (fig. 15). Secure the cover to the casing,
following the procedure in part 2.1.2 and tighten the screws to their recommended torque.
Check that the shaft rotation stall torque is between 3-4.3 ft.lbs.(4-6 Nm).
If this torque is correct, connect the con-rods to the crankshaft and to the next stages. If it is not, redefine the
shim pack, repeating the operations.