3. SPARE DYNAMIC SEALS
LOWER
4. SPARE STATIC SEALS
SCRAPER
SEE GLAND NUT
OUTER CYLINDER
LOCK KEY GLAND NUT
(SHOWN WITH THE LOWER BEARING INSTALLED)
A-A
A
Main Landing Gear Shock Strut Seals Replacement
Figure 201
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STRAP
INNER CYLINDER
RETAINER
GLAND NUT
MLG Lower Bearing Puller Equipment
Figure 202 (Sheet 1)
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MAINTENANCE MANUAL
OUTER CYLINDER
STRAP
MINIMUM MINIMUM
FORCE
FORCE
ONLY
ONLY OUTER CYLINDER
RAM ASSEMBLY
SEE B DYNAMIC SEAL RING
ASSEMBLY
LOWER
BEARING SLIDE HAMMER
PULLER LOWERASSEMBLY BEARING
DO NOT PERMIT
THE PULLER
ASSEMBLY TO
TOUCH THE
GLAND NUT OR
GLAND NUT RAG FOR GLAND
SCRAPER RING
NUT PROTECTION
RAM ASSEMBLY
DYNAMIC SEAL INSTALLATION LOWER BEARING INSTALLATION
RAM
B
MLG Lower Bearing Puller Equipment
Figure 202 (Sheet 2)
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MAINTENANCE MANUAL
LOCK ASSEMBLY
INNER CYLINDER
LOCK ASSEMBLY FOR SPACER AND SEAL RETAINER
MLG Lower Bearing Puller Equipment
Figure 202 (Sheet 3)
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MAINTENANCE MANUAL
S 212-096
(5) If there was leakage between 1 and 15 drops during the 15 minute period, do the steps that follow:
NOTE: 20 drops is equal to 1.0 cc.
____
CAUTION: A DEFLATED OR FLAT STRUT CAN CAUSE DAMAGE DURING LANDING.
_______ IF THE AIRPLANE LANDED WITH A DEFLATED OR FLAT STRUT, DO A HARD LANDING INSPECTION PER AMM 05-51-01/201 TO MAKE SURE THERE IS NO DAMAGE.
(a)
Continue to monitor the strut for leakage on subsequent landings. After 10 days service the shock strut with nitrogen and make sure the "x" dimension in the servicing chart is correct (AMM 12-15-01/301).
(b)
After 20 days deflate the strut and add oil until it is completely full. Then service the shock strut with nitrogen (AMM 12-15-01/301).
(c)
Do the 10 and 20 day servicing steps again until you change the seals.
S 212-097
(6) If there was leakage between 16 and 30 drops during the 15 minute period, do the steps that follow:
NOTE: 20 drops is equal to 1.0 cc.
____
CAUTION: A DEFLATED OR FLAT STRUT CAN CAUSE DAMAGE DURING LANDING.
_______ IF THE AIRPLANE LANDED WITH A DEFLATED OR FLAT STRUT, DO A HARD LANDING INSPECTION PER AMM 05-51-01/201 TO MAKE SURE THERE IS NO DAMAGE.
(a)
Continue to monitor the strut for leakage on subsequent landings. After 5 days service the shock strut with nitrogen and make sure the "x" dimension in the servicing chart is correct (AMM 12-15-01/301).
(b)
After 10 days deflate the shock strut and add oil until it is completely full. Then service the strut with nitrogen (AMM 12-15-01/301).
(c)
Do the 5 and 10 day servicing steps again until you change the seals.
S 212-098
(7) If the leakage was more than 30 drops during the 15 minute period, the shock strut is not serviceable. You must replace the seals.
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本文链接地址：757 AMM 飞机维护手册 起落架 CHAPTER 32 - LANDING GEAR 1(124)
