(2)
The lubrication of the jackscrew between the ball nut and the stops
(3)
The lubrication of the chain
(4)
The lubrication of the jack shaft.
TASK 12-22-41-603-001Stabilizer Trim Jackscrew, Upper and Lower Gimbal Lubrication
_____________________________________________________________
A. Consumable Materials
(1)
D00633 Grease - BMS 3-33 (Recommended)
(2)
D00013 Grease - MIL-G-23827 (Alternate)
B. References
(1) AMM 24-22-00/201, Manual Control
C. Access
(1)
Location Zone
702 Tail Compartment Access Door
(2)
Access Panels
3701 Stabilizer Trim Access Door
D. Procedure
S 863-006
(1)
Supply electrical power (AMM 24-22-00/201).
S 013-003
(2)
Open the access door 3701.
(3)
Lubricate the upper and lower gimbals with grease (Fig. 301).
S 643-005
(4)
Lubricate the stabilizer trim jackscrew (Fig. 301):
S 643-004
(a) Move the stabilizer to the APL NOSE DN position (stabilizer leading edge up).1) Make sure the stabilizer jackscrew touches the endstop.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
ENDSTOP
SEE A
JACKSCREW
UPPER GIMBAL ZERK
BMS 3-33
BMS 3-33
OR 1 MIL-G-23827 (2 LOCATIONS) (1 LOCATION) BALLNUT ZERK
ENDSTOP
BMS 3-33
OR
MIL-G-23827
(1 LOCATION)
LOWER GIMBAL ZERK 1 BMS 3-33 OR MIL-G-23827 (2 LOCATIONS)
FWD
JACKSCREW AND GIMBAL FITTINGS 6 POINTS
1
ONE MORE LUBE POINT
IS ON THE OPPOSITE
SIDE (NOT SHOWN) A
Stabilizer Jackscrew and Gimbal Fittings Lubrication
Figure 301
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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ALL ú ú 01.1 Page 302 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
(b) Set the stabilizer trim cutout switches to CUTOUT.
(c) Lubricate the bottom part of the stabilizer trim jackscrew ú between the ball nut and the endstop with grease.
(d)
Set the stabilizer trim cutout switches to NORMAL.
(e)
Move the stabilizer to the APL NOSE UP position (stabilizer
leading edge down). ú 1) Make sure the stabilizer jackscrew touches the endstop.
(f) Set the stabilizer trim cutout switches to CUTOUT.
(g)
Lubricate the top part of the stabilizer trim jackscrew between ú the ball nut and the endstop with grease.
(h)
Set the stabilizer trim cutout switches to NORMAL. ú (i) Put grease into the ballnut zerk fitting and do a visual check ú to make sure that one of the following two conditions is met: ú 1) That new grease continuously comes out of the vent hole at ú the upper portion of the ballnut while you operate the ú actuator for one complete cycle of the ballnut (endstop to ú endstop). ú ú
NOTE:____Clean unwanted grease from the vent hole, as ú necessary. Do not remove the grease from the ú ballscrew. ú ú 2) That new grease continuously comes out of the upper ice ú scraper at the upper portion of the ballnut while you ú operate the actuator for one complete cycle of the ballnut ú (endstop to endstop). ú ú
NOTE:____Clean unwanted grease from the ice scraper, as ú necessary. Do not remove the grease from the ú ballscrew. ú
S 413-007
(5)
Close the access door 3701.
S 863-023
(6)
If the electrical power is not necessary, remove the electrical power (AMM 24-22-00/201).
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