L74m, l74c, Installation & maintenance instructions – Norgren L74C Series User Manual
Page 2

ASSEMBLY
1. Lubricate o-rings, the portion of the manual drain body
(18, 28) that contacts the bowl, and the hole in the
manual drain body that accommodates the stem of drain
valve (19, 29) with o-ring grease.
2. Assemble lubricator as shown on exploded view. Early
and current cartridge assemblies (items 52 and 56) are
not interchangeable. Always replace a used cartridge with
an identical cartridge. Early cartridges have a slotted tab
(52); current cartridges have a hole in the tab (56).
3. Assemble the 1 litre (1 quart) liquid indicator parts (65,
66, 67, 68, 69, 70) to reservoir. Apply a 0.9 to 1.8 kg (2
to 4 pound) clamping force to upper and lower sight
glass brackets (66). Tighten screws (65).
4. Torque Table
N-m (Inch-Pounds)
2 (fill plug), 4 (quick fill cap)
1,1 to 1,6 (10 to 14)
6, 8 (Dome) and 21, 31 (Nut)
2,3 to 2,8 (20 to 25)
34, 45 (Screw)
1,7 to 2,3 (15 to 20)
53, 57 (Screw)
1,1 to 1,6 (10 to 14)
65 (Screw)
0,9 to 1,1 (8 to 10)
5. Push reservoir, or reservoir with guard, into body and
turn fully clockwise.
© Norgren 2002
L74M, L74C
Installation & Maintenance
Instructions
WARNING
These products are intended for use in industrial
compressed air systems only. Do not use these products
where pressures and temperatures can exceed those listed
under Technical Data.
Polycarbonate plastic reservoirs can be damaged and
possibly burst if exposed to such substances as certain
solvents, strong alkalies, compressor oils containing ester-
based additives or synthetic oils. Fumes of these
substances in contact with the polycarbonate reservoir,
externally or internally, can also result in damage. Clean
with warm water only
Use metal reservoir in applications where a plastic
reservoir might be exposed to substances that are
incompatible with polycarbonate.
In lubrication applications some oil mist may escape
from the point of use to the surrounding atmosphere.
Users are referred to safety and health standards for
limiting oil mist contamination and utilization of protecting
equipment
Before using these products with fluids other than air,
for nonindustrial applications, or for life-support systems
consult Norgren.
a subsidiary of IMI plc
IM-200.400.02
(5/02)
Supersedes 4/99
50
34
35
36
39
37
38
33
28
32
30
29
31
27
Current Metal Bowl
40
Early Plastic Bowl
Early Metal Bowl
44
49
Current Plastic Bowl
17
26
25
24
23
22
18
20
19
21
45
46
48
47
42
41
43
Optional 1 Quart (1 Litre) Bowl
58
59
65
66
68
69
70
68
66
67
63
60
64
62
1
51
52
54
55
53
4
5
2
3
61
8
9
6
7
56
57
57A
57B
Current
Cartridge
Early
Cartridge