Operat ion and Maintenance Manual
QTS Series Twin Screw Positive Displacement Pump
14
Ampco Pumps Company QTS Manual M-030 Rev A 1.16
# Part
Piece
QTS 100
QTS 200
QTS 300
21
Front cover nuts
15
20
30
11
Rotor nut
35
40
50
40
Socket head cap screw (bearings)
10
15
20
44
Bearing lock nut
25
30
40
46
Socket head cap screw (sync ring)
2.1
4.2
6.25
25
50
75
M
A
IN
T
E
N
A
N
C
E
Bill of Materials
Please use this table and diagram to identify each component to be assembled.
Bill of Materials:
1
Front cover
19
Synchronization ring
37
Front bearing
2
Left rotor
20
Tapered driven ring
38
Rear bearing
3
Right rotor
21
Cover nut
39
Lock washer
4
Pump casing
22
Flat washer
40
Socket head cap screw
5
Back cover
23
Spring washer
41
Drive gear
6
Gear case
24
Set screw
42
Driven gear
7
Pump base plate
25
Dowel pin
43
Bearing lock washer
8
Driven shaft
26
O-ring
44
Bearing lock nut
9
Drive shaft
27
Gasket
45
Lock washer
10
Gear case cover
28
Socket head cap screw
46
Socket head cap screw
11
Rotor nut
29
Front seal
47
O-ring
12
Mechanical seal
30
Flat washer
48
Pressure release valve
13
Button head set screw
31
Hexagon bolt
49
Rear seal
14
Stud
32
Eye bolt
50
Oil sight glass
15
Bearing spacer
33
Hexagonal bolt
51
Hex Plug
16
Gear spacer
34
Gear key
52
Plug
17
Retaining flange
35
Coupling key
53
Plug
18
Tapered drive ring
36
Lock ring
54
Nipple flush
Note: Depending on the model, some components may not be included.
Torque Values
Use the following torque table to tighten each item when indicated in the manual:
Coupling set screws 10 lb·ft for all models.
Hexagonal bolts/hexagonal nuts motor/base, pump/base, 40 lb·ft.
Any other screw 10 lb·ft.
Minimum Thickness Gage
Model
Value
100
0.007 in
200
0.007 in
300
0.010 in
Note: Value at both flanks of rotor
lb·ft
lb-ft
lb-ft
lb-ft
lb-ft
lb-in
