TM 9-2320-279-20-3
M978 Tanker Maintenance Instructions (Cont)
25-41. VAPOR RECOVERY TEST
This task covers:
a. Test Setup
b. Test Operating Procedure
INITIAL SETUP
c. Test Cleanup
d. Follow-on Maintenance
Models
M978
Test Equipment
Manometer
Air Regulator (0-3 psi Maximum Range)
Four’ in. Camlock Test Cover
(Drilled and tapped for 3/4-in. tee fitting)
Vapor Recovery Kit
(Eastern Technologies, P/N 45D016)
Supplies
Ties, cable, plastic, Item 52, Appendix C
References
California Air Resources Board Certification and
Test Procedures for Vapor Recovery Systems of
Gasoline Delivery Tanks.
Equipment Condition
TM or Para
Condition Description
Para 25-3
Tank and piping drained.
Para 23-4
Filter separator drained.
Special Environmental Conditions
None
Personnel Required
MOS 63S, Heavy wheel vehicle mechanic
General Safety Instructions
No smoking, flame, sparks and hot or glowing
objects within 50 ft (15 m) of vehicle.
a. Test Setup.
(1)
Install vapor recovery kit as follows:
(a)
Adjust 90-degree elbow (1) on
vapor recovery pipe in rear module
forward towards top vent valve
boot.
(b)
Install 3.5-in. metal connector (2)
into boot opening.
(c)
Slide three clamps (3) over
connector and boot.
(d)
Install molded rubber vapor
tube (4) onto 90-degree elbow
and 3.5 in. metal connector.
(e)
Position and tighten three
clamps (3).
(2)
Install 4 in. camlock cover (5), prefitted
with manometer and air regulator, to
end of vapor recovery pipe (rear
module).
Change 3
25-173
