Instruction Manual for F1300/1600 Mud Pump
29
4) Install shims under bearing press covers to obtain 0.06-0.10mm (0.0024-0.0040in) clamp to get
preload pressure. The preload pressure is obtained by placing the correct amount of shims under the
bearing cap. The required amount of shims is determined as follows:
z
Place a piece of wire
（
about 0.8mm diameter
）
or plastic clearance gauge between the bearing
sleeve outer race and bearing press cover inner race, press it at the middle place of bearing press
cover so far as possible. Fasten main bearing bolt, and see the table 4 for torque.
z
Remove bearing press cover and determine clearance between bore of cap and OD of bearing
carrier by either measuring thickness of compressed lead or measuring compressed dimension (Max.
size) of plastic gage.
z
Use this dimension to calculate the required thickness of shims as follows:
Shims thickness required = original shim thickness (here 1mm) – wire compressed thickness- clamp
shrink range (0.06~0.10) mm.
Example:
0.040’’ Original shims – 0.025’’ Lead Thickness – (0.0024~0.0040’’) Clamp shrink range
=0.0126~0.0110’’ Shim Thickness requires
NOTE: The tolerances on left/right sides are not be all the same after machining, which
makes it necessary to measure and calculate individual shim requirements for each (right
hand and left hand) main bearing cover.
5) Place the correct amount of shims as stated above under main bearing press cover, and tighten
main bearing bolt with torque values in table 4..
6) Again check inner and outer row of rollers on each bearing as previously outlined to assure equal
loading is still present on each bearing.
Table 4
Torque Wrench
Size
Description
N.m ft.lbs
Thread
Size
mm in
Data 13210
9750
3”-8UN
92.0 3
5/8”
3.6 Installing of Crosshead Guides
1)
Thoroughly clean all dirt or contamination and remove all burrs or rough edges from the surface
of the guides and in the frame compartment.
2)
If old guides are to be reused, inspect the friction surfaces for wear and scoring streaks.
Otherwise it should be replaced.
NOTE: For F-1300/F-1600 upper and lower crosshead guides are NOT interchangeable.
The lower guide places the crosshead on frame centerline, and upper guides are
machined to afford proper clearance between crosshead and upper guide. Upper guide is
thinner, a big chamber is at its rear part and oil bore at the middle.
3)
Install upper and lower guides, torque guide screws with 205
～
270N.m (150
～
200ft.lbs)
4)
Check compactness between frame and guides at points A (Fig. 21); it is appropriate that 0.05mm
(0.002
″
) feeler can not press into.
