Westco 16-25, Руководство по эксплуатации продукта, Страница: 19 / 49

WARNING: After applying power to turn rotary gear, disable hydraulic
system before proceeding.
2. Grease the three gear bearings.
3. Grease all guide roller bearing zerts (1 through 12; 13 and 14 when present).
4. Pack the rotary plunger and plunger pocket with grease.
Gear Grease To pack the tong with grease, refer to Figure 4-2 and Figure 4-3 and proceed as follows:
WARNING: Packing the gears while the power unit is operating is extremely
dangerous. Failure to observe proper precaution in maintaining this
unit could result in serious injury.
1. Disable the tong by both of the following methods.
WARNING: Keep hands out of the jaw area while the power unit is operating.
Disconnect power from the power unit electrical motor or turn off diesel engine as
applicable, shift speed lever to neutral and set control lever to neutral.
Disconnect the hydraulic pressure line (1 inch line) from the tong at the hose connector.
2. Remove the rotary gear as described in "Tong Disassembly and Parts" (Section 8).
3. Pack the unit with the specified gear grease (see Figure 4-3) by liberally applying
Grease through the back rotary opening in case (Figure 4-2).
Figure 4-4: Door latch Figure 4-5: Guide roller shaft positions
Test and Adjustments
The following tests and adjustments should be made.
Door Latch Adjustment
WARNING: The door latch must be readjusted each time the rotary guide
rollers are adjusted.
The latch hinge pin is an eccentric shaft providing adjustment. The high point
of the eccentric is indicated by an arrow. With the rotary in place and six guide
rollers adjusted so that the rotary is centered, rotate the latch hinge pin to
achieve the latch/lug alignment shown in Figure 4-4.
After adjusting the latch hinge pin, install two bolts and lockwashers to retain
adjustment, and tighten the locknut on the bottom of the shaft.
Following adjustment, recheck operation by opening and closing the doors several
times. With the doors closed and latched, pull on either door. The latch must
not release.
WARNING: Failure to adjust properly can result in door opening under
load, damaging the tong and injuring personnel.
Section 4 Page 3