SPP Pumps Auto Prime Medium Head Open Set ACE80-100 Workshop Manual - Manual (Page 6)

Manual No/Rev
W72-020E / 1
Workshop Manual for
ACE80/100 Diesel Driven Centrifugal Pumps
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 6 of 21
6. MAINTENANCE & REPAIR
The extent of disassembly will depend upon the
faults identified for rectification from the fault
finding guide in section 5. The code letters relate
to the workshop rectification procedures outlined
below:
6.1 A - Check & Service the Non Return Valve
1. Refer to the pump end section drawing in
section 7.1
2. the Remove the Bauer hose connection from
the delivery flange.
3. Remove the four long bolts (83) and lift off
the non-return valve body (80).
4. Remove the non-return valve ball (81),
examine for surface damage and replace if
damaged sufficiently to prevent a good seal
with the valve seat (82).
5. Lift and examine the valve seat, refurbish if
possible or replace if damaged sufficiently to
prevent a good seal with the ball.
6.2 B -Check & Service the Vacuum Air Filter
1. Refer to the priming tank section drawing in
section 7.5
2. Remove the air filter cover (6) by unscrewing
the nut (50).
3. Lift out the filter assembly (17) and examine.
4. If the filter is damaged, replace, if blocked or
dirty, clean the filter with a suitable solvent,
dry and replace.
6.3 C - Check & Service the Priming Tank
1. Refer to the priming tank section drawing in
section 7.5
2. Remove the eight M10 nuts (51) that retain
the top cover of the priming tank and lift off
the cover complete with float valve. Set
aside on a clean surface for examination.
3. Check that the float (14) is intact and not
punctured, replace if damaged.
4. Check that the fulcrum arm moves freely
and is connected to the air outlet valve (29).
Look for signs of wear on the fulcrum and
valve pins (15 &16) and replace if worn.
5. Remove the four M6 capscrews (66) and
carefully withdraw the main valve assembly
from the top cover.
6. Disassemble the valve and examine all
valves, seats and pins for wear and replace
as necessary.
61 M4 SELF LOCK NUT
56 NYLON WASHER
10 AIR INLET VALVE
32 O RING
9 MAIN INLET VALVE
8 VALVE SEAT
57 M4 WASHER
13 SPRING
11 DIAPHRAGM
7 VALVE ROD
36 GASKET
66 M6 CAPSCREW
58 M6 WASHER
30 FULCRUM BRACKET
29 AIR OUTLET VALVE
31 FULCRUM ARM
15 FULCRUM PIN
59 M8 WASHER
64 M10 STARLOCK WASHER
62 M8 SELF LOCK NUT
16 VALVE SUPPORT PIN
63 M6 STARLOCK WASHER
Main Valve Assembly
7. Reassemble as per paragraphs XXX to XXX
8. Check the condition of reflux ball valve (19)
and the valve seat (18) replace if damaged
and confirm that the pipe (2) is securely
fitted to the valve seat.
9. Check the surge control valve for general
condition and cleanliness, confirm that the
valve and spring retainer are not worn,
replace if necessary.
20 VALVE SEAT
28 VALVE SPINDLE
24 KNOB (NOT SHOWN)
21 VALVE
67 M8 WASHER
23 DISTANCE PIECE
22 SPRING RETAINER
65 KLIP RING
65 KLIP RING
27 SPRING
Surge Control Valve
10. Refit the top cover as per paragraphs XXX
6.4 D - Check Vacuum Pump Belt Tension
1. Remove guard.
2. Slacken the locking nut and the retaining
bolt, rotate the tensioner to adjust the
tension of the belt. Tighten the locking nut
and the retaining bolt and check the tension
thus: