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Hanover Chemical Industries, Inc. Hanover R-2
Hanover Processing Co. HF-832
WARNING
Prolonged contact with hydraulic fluid (MIL-H-83282)
liquid or mist can irritate eyes and skin. After any
contact with skin, wash contacted area with soap and
water. If liquid is swallowed, do not induce vomiting;
get immediate medical attention. Wear rubber gloves
when handling liquid. If prolonged contact with mist is
likely, wear an appropriate respirator. When fluid is
decomposed by heating, toxic gases are released.
NOTE
Mixing of hydraulic fluids is authorized only in emergency
situations. An entry in the remarks section of DA Form 2408-
13-1 and 2408-13-1E is required.
(TABLE I.D. 922262)
2-70
TM 1-1520-248-10
2-93. CLOSED CIRCUIT REFUELING (POWER 6. Fuel hose nozzle  Insert into fuel cell
OFF OR RAPID). receptacle.
1. Grounding cables  Connect. WARNING
2. Fireguard  Posted.
To prevent fuel spillage, exercise
extreme caution when filling fuel cell, as
3. Filler cap  Remove.
there is no automatic shutoff of fuel flow.
CAUTION
7. Fill fuel cell.
Ensure that servicing vehicle pressure is 8. Fuel hose nozzle  Remove.
not above 125 psi while refueling.
9. Filler cap  Secure.
4. Closed circuit refueling module  Close and
latch. 10. Grounding cables  Disconnect.
5. Fuel hose nozzle  Insert into fuel cell 11. Record on helicopter servicing records.
receptacle and lock into closed circuit
refueling module.
2-95. ENGINE OIL SYSTEM SERVICING.
6. Automatic nozzle lever  ON or FLOW. Fuel
flow will automatically shut off when fuel The engine oil system may be serviced at the oil tank
reaches within one-half inch of spillover. Just reservoir. Access to filler cap of oil tank is located on
prior to shutoff, fuel flow may cycle several right side, aft of the oil cooler. The oil level sight gage
times as maximum fuel level is reached. The may be checked with the cowling installed through a
gage on the servicing unit will indicate when small round window located on the left side of the
fuel flow stops. helicopter and aft of the oil cooler (fig. 2-1). If oil level
appears low and the engine has been shut down longer
7. Automatic nozzle lever  OFF or NO FLOW than 15 minutes the following steps shall be completed
when fuel flow stops. prior to servicing.
8. Fuel hose nozzle  Unlock and remove. WARNING
9. Filler cap  Secure. If the following procedures are not
followed prior to servicing the engine oil
10. Grounding cables  Disconnect. system, the opportunity exists to over
s e r v i c e t h e system and a l l o w an
11. Record on helicopter servicing records. excessive amount of oil to accumulate
within the accessory gearbox. This
condition may cause aerated oil due to 2-94. GRAVITY OR OPEN PORT REFUELING gear meshing and inadequate air-oil
(POWER OFF AND RAPID). separation. This could result in a HIGH
OIL TEMPERATURE ENGINE, LOW OIL
1. Grounding cables  Connect. PRESSURE ENGINE, and/or LOW OIL
QUANTITY ENGINE indication/condition
2. Fireguard  Posted. which i f not properly diagnosed
immediately will cause engine damage or
3. Filler cap  Remove. possible engine failure.
4. Fuel servicing pressure  Check 125 psig 1. Start and run helicopter until operating
maximum. temperatures are within normal ranges.
5. Closed circuit refueling module  Open. 2. Ensure battery is charged.
2-71
TM 1-1520-248-10
3. Shut down helicopter. engine shut down. When properly serviced, the oil level
will be in the center of the sight gage.
4. Recheck oil level.
NOTE
2 - 9 6 . TRANSMISSION O I L SYSTEM
SERVICING. Excessive oil leakage may occur if gearbox is overfilled. When servicing the gearbox,
The transmission oil system may be serviced by adding allow oil level to stabilize for correct
oil to the transmission through the transmission oil filler indication on sight gage.
port, located on top of the transmission and forward of
the mast. b. Service gearbox to normal capacity with
approved lubricating oil (table 2-1) and record on
CAUTION helicopter servicing records.
DO NOT mix MIL-L-7808 and DOD-L- 2-98. HYDRAULIC OIL SYSTEM SERVICING.
85734 oil except in an emergency. If oils
are mixed, oil shall be drained and The hydraulic reservoir may be serviced by removing
system serviced with approved oil within the forward cowling, removing the hydraulic reservoir
5 hours of operation. cover lock pin and adding hydraulic oil to the system at
the hydraulic reservoir. The hydraulic oil level may be
　
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