Preset Metered Control Valve
SER 3690-C
Alemite Corporation
5
Revision (10-04)
9. Install Hand Guard (32) onto the Housing.
10. Screw the Cap into the Housing.
• Tighten the Cap to 35 ft. lbs. (47 Nm).
Register Assembly
11. Install Register Assembly (20) onto the Housing
• Make sure the Register seats on the four pins.
12. Install Screws (21) that secure the Register Assembly
to the Housing.
• Tighten the Screws securely.
13. Install Setscrew (12) [with Loctite 222] into the Worm
Gear.
14. Install Worm Gear (13) [spur gear upward] onto the
shaft of the Spindle and Gear Assembly.
• Make sure the Worm Gear’s setscrew points toward
the flat on the Spindle and Gear Assembly.
• Check to ensure the gear meshes properly with the
Register’s gear.
15. Install Washer (22) onto the bottom post of the
Register Assembly.
16. Install Pointer Gear (23) [flat surface downward] onto
the Washer.
IMPORTANT: Make sure the Gears mesh
evenly.
17. Move the Worm Gear [straight upward or downward]
as required so its gear wheel meshes evenly with the
Pointer Gear.
• Tighten the Setscrew securely.
Lock Pawl
18. Install and seat Spring (16) [flat portion first] onto the
the post on the Housing.
• Make sure the Spring seats in the notch.
19. Install Lock Pawl (14) onto the Housing’s post.
• Make sure the Lock Pawl properly engages the
Spring.
20. Install Retaining Ring (15) that secures the Lock Pawl
to the post.
Clean and Inspect
1. Clean all metal parts in cleaning solvent. The solvent
should be environmentally safe.
2. Inspect all parts for wear and/or damage.
• Replace as necessary.
3. Closely inspect the mating surfaces of all components
for any imperfections. Ensure a smooth and clean
contact is obtained when assembled.
Assembly
NOTE: Prior to assembly, certain compo-
nents require lubrication. Refer to Table 2
for details.
Metered Control Valve
NOTE: Refer to Figure 3 for component
identification.
Metering Mechanism Assembly
1. Install and seat Washer (9) into the head of Housing
(8).
2. Install O-Ring (10) into Gland Nut (11).
3. Screw the Gland Nut into the Housing.
• Tighten the Gland Nut securely.
4. Position Chamber and Pinion Assembly (5) gear end
upward.
5. Install Planetary Gear (6) into the Chamber and
Pinion Assembly.
6. Position Spindle and Gear Assembly (7) onto the
Chamber and Pinion Assembly.
7. With the Spindle and Gear Assembly pointed upward,
install the entire subassembly into the Housing.
• Use care passing the O-Ring.
HINT: Rotate the Spindle and Gear Assem-
bly so the flat of the shaft points between
the posts of the Register Assembly. This
aids in the installation of the Worm Gear.
CAUTION
Make sure the subassembly does not shift during
installation or once installed. Damage to the
Gears can occur.
8. Install O-Ring (4) onto Cap (3).
Item No.
Description
4
O-Ring
9
Washer
10
O-Ring
33
O-Ring
36
Quad-Ring
Table 2 Components Lubricated in Clean Oil
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