A service engineer asks for a torque figure

nts. 
5-1. GENERAL. This section provides information useful to maintenance personnel in inspecting, servicing, repairing, and otherwise maintaining the air compressor. Any special disassembly or reassembly procedures are described under the appropriate heading. 
5-2. TORQUE VALUES. We recommend the use of a torque wrench. The following table gives the torque for tightening the different size cap screws and nuts. 
TABLE 5-1. TORQUE VALUES 
UNIFIED COARSE UNIFIED FINE 
Dia. Pitch Ft. Lbs. Dia. Pitch Ft. Lbs. 
Min. Max. Min. Max. 
1/4''-20 6 7 1/4"-28 5 6 5/16"-18 12 14 5/16''-24 9 10 3/8"'-16 2i 24 3/8"'-24 14 16 1/2"-13 52 59 1/2"'-20 40 42 5/8"~11 105 120 5/8"'-18! 60 70 3/4"-10 170 190 3/4'"'-16 100 120 
5-3. COMPRESSOR LUBRICATION. A non-detergent, napthenic base oil containing a rust and oxidation inhibitor is recommended. The viscosity should be selected for the temperature immediately surrounding the unit when it is in operation. The viscosities given in Table 5-2 are int

ength 48 in. 
Height $2 in. 
Width 21% in. Net weight 185 Ib 
k. Adjustment Data. Adjustment data for the engine can be found in TM 5—2805-206-14. 
l. Base Plan. See figure 7. 
m. Nut and Bolt Torque Data. 
Cylinder flange stud nuts_____- 45 ft.-lb. 
Cylinder flange studs_.________ 45 ft.-lb. 
Unloader to crankcase bolts.__.40 ft.-lb. 
Side plate to crankcase bolts__.25 ft.-lb. 
Intake manifold stud nuts_____ 60 ft.-lb. 
Intake manifold studs_________ 60 ft.-lb. 
Exhaust manifold studs_______ 25 ft.-lb. 
Exhaust manifold stud nuts____25 ft.-Ib. 
Connecting rod cap bolt nut_.__25 ft.-Ib. 
n. Performance Data. 
Displacemént | 0102 cu. ft./stroke at 
720 rpm 
Delivery 5 cfm 
» Bore and stroke 8% and 1% x 2% 
0. Time Standards. Table I lists in hours the 
time required to service or replace the com￾ponent parts of these compressors. 
Table I. Time Standards 
Lubrication and Service 
01 ENGINE 
0100 Engine Assembly 
CO ee 0.5 
(drain and replenish oil in crankcase

. 
(45.08 cm) 
SE bs oa Wied owriceattans 17-3/4 in. 
DE saéveuteenu cae - in. » Dl esnnestuse eee oa Military design — yy 
WED <cudtive¥eswans 29 Ibs. (13.15 kg) 
(6) Fuel filter. 1-11. Direct and Genera) Support 
GE i000 eens ceases Military design Maintenance Data. 
a. Compressor Torque Data. 
(7) Adjustments. Cylinder head bolts .... 10 ft-lb 
Cylinder to base bolts... 18 ft-lb . 
Spark plug gap ........ 0.028-0.033 in. End cover bolts ....... 5 ft-lb 
(0.071-0.084 Connecting rod bolts ... 8 ft-lb 
cm) Flywheel pulley bolt ... 43 ft-lb : 
Contact point gap... ... 0.016-0.020 in. (0.406-0.050 b. Engine. See TM 5-2805-256-14 for 
cm) detailed engine data. 
Valve Tappet clearance 
(intake and exhaust) see "saan to 1-12. Compressor Repair and Replacement 
(0 01 dose 0.027 Standards. Table 1-1 lists the manufacturer's 
») he . sizes, tolerances, desired clearances and maximum 
Gm SS allowable wear for the Air Compressor, Model 
86-083. 
NOTE: The manufacturer's dime

k level) 
Air Compressor 2190 
-Crankcase Fill Cap TEP 
(See Key) Air Compressor 
Crankcose Drain Cap 
(Drain and refill) 
Wheel Bearings 
(See note 3) 
MODEL LP - 512 ENG 
MODEL LP-512-ENG-1 
MEC 4310-241-15 11 @) 
Figure 11. (Superseded) Lubrication order. 
Cc 2
c2 
PO EI ORF D ETE Oe Di RE spies ME ROTSEMGS Weare cc tutoe rane at te ee Te Net 
" 
Peet ADA 
TM 5—4310-241-15 
LUBRICANT © INTERVAL INTERVAL © LUBRICANT 
Air Compressor 2190 TEP 
Crankcose Fill Cap 
(See Key) 
(Model OEH-34-60-Eng-4) 
Air Compressor 2190 
Cronkcase Fili Cop —TEP 
(See Key) 
MODEL OEH-34-60-ENG-1 
MODEL OEH-34- 60-ENG-2 
MODEL OEH-34-60-ENG-3 
MODEL OEH-34-60-ENG-4 
— Key — 
Air Compressor Motor 
(Lubricate sparingly) 
(See note 2) 
Air Compressor 
Crankcose oil level 
Sight Gage 
(Check level) 
Air Compressor 
Crankcose Drain Cap 
(Drain ond refill) 
EXPECTED TEMPERATURES LUBRICANT CAPACITY Above +32°F | +40°F to ~10°F [0°F to -65°F INTERVALS 
| 2190-LUBRICATING OI

n 
the motor nameplate. If the system uses an older motor 
that has been rewound several times, or has a smaller 
motor, a somewhat lower percent efficiency (or the 
motor nameplate efficiency rating) should be used. For 
a more accurate analysis, add the horsepower ratings 
for the parasitic loads from any auxiliary motors such as 
cooling fans to the compressor motor rating.
It should be noted that the common practice in the 
industry is to apply motors having a 15 percent 
continuous service factor and to use about two-thirds 
of this service factor. This means that a motor having a 
nominal nameplate rating of 100 hp may, in fact, be 
loaded to 110 bhp at compressor full capacity and 
pressure. This may not be expressed in the 
manufacturer’s sales literature, so engineering data 
sheets or a published CAGI sheet for the specific 
compressor should be consulted. If the motor is running 
into the service factor (some as high as 30 percent), the 
higher horsepower