Westco 16-25, Руководство по эксплуатации продукта, Страница: 21 / 49

11. Open doors and remove rotary. Rotate each roller by hand and check vertical
play of rollers. Rollers should rotate with a light uniform drag. Vertical
clearance (end play) must be no less than .010 inches and no more than .050
inches. Adjust with the locknut.
12. Lubricate gears and rollers liberally and reinstall rotary. Check tooth
engagement. Install rotary retaining bolts.
13. Following adjustment, recheck the door latch adjustment and perform a preoperation
Shifting Locator
Pin Adjustment
test per the section "Testing".
The shifting locator pin that holds the shifting mechanism in the selected speed is
adjustable. This adjustment should be checked at the beginning of a job and at the
start of each shift thereafter.
To check the operation of the shifting locator pin, raise the shifting handle to the
high-speed position and verify that the lever remains in the high-speed position
until considerable force is exerted, when it will give way to slide freely to the next
position. Repeat this operational check in the low-speed and neutral positions.
When an operational check indicates the need to adjust the shifting locator pin,
adjust by tightening the spring plunger body one-half turn. Repeat the locator pin
operational check. If additional adjustment is indicated, repeat the adjustment
procedure until proper operation is achieved.
Storage
When not in use, the tong should be stored away from the vicinity of normal
drilling operations. For temporary storage, the tong may remain tied off in the
rig structure. For extended storage, put the tong in a protective environment.
Section 4 Page 5