Table 3-1. Lubricating Oils, Turbine Engine Aircraft-continued

TB 55-9150-200-24

Table 3-1. Lubricating Oils, Turbine Engine Aircraft (Cont)

For main rotor use MIL-

G-25537 grease

Alternate oil for tail

rotor, MIL-L-21260A

Type 1, Grade 50

CH-54B

T73-P-700

Same

For main, intermediate,

and tail gear boxes

use 7.5 centistoke (cs)

(see Note 4)

For main and tail rotors

use MIL-L-21260A, Type 1,

Grade 30

For main rotor use MIL-G-25537

grease

Alternate oil for tail

rotor, MIL-L-21260A

Type 1, Grade 50

(KIOWA)

Above -32° (-25° )

OH-58A

T63-A-700

Same as engine oil

use MIL-L-23699

system

Below -32° (-25"F)

use MIL-L-7808

OH-58C

T63-A-720

Same

Notes:

1. Allowable temperature tolerance is plus or minus 5° (3° ).

2. CAUTION Lubrication oil made to MIL-L-7808 by the Shell Oil Company under their part number 307,

qualification number 7D-1, contains additives that are harmful to seals made of silicone, and shall not be used

in those engines and transmissions which contain silicone seals. These applications are listed below:

Aircraft

Component

UTE

U-21, EU-21A, RU-21A,B,C,D,E,H, U-21F

Engine

TARHE

CH-54A, B

Engine

MOHAWK

OV-1A,B,C,D, RV-1D

Engine

COBRA

AH-1G