5.7 Dismantling and reassembly of the bypass
for visit
DISMANTLING
Set the bypass to the minimum pressure by fully unscre-
wing nut
834
.
Note the number of turns made when unscrewing it so
as to be able to set the bypass to the same pressure
when reassembling.
Remove the 3 screws
856
from the bypass cap.
Take out the spring
824
.
Remove the poppet
823
by pulling on its cylindrical sec-
tion with the fingers.
Check the bypass.
Clean all parts prior to reassembly.
REASSEMBLY
Reassemble in reverse order with respect to disassembly.
Set the bypass to the pressure desired by retightening
nut
834
the number of turns note when disassembling.
Tighten down lock nut
835
.
5. ASSEMBLY / DISMANTLING (continued)
NT 1010-G00 05.13 CC8-65 EP Pump e
5/8
Aside from greasing the bearings periodically with high-
temperature grease (for ex. ENERGREASE HTG2-BP), it is
necessary to check, every 500 hours :
• condition of the vanes :
Original height : . . . . . h = 38 mm
replace them if : . . . . . h < 36 mm
• condition of the pushrods :
Original height : . . . . . h = 79 mm
replace them if : . . . . . h < 78 mm
• surface condition of the body and end-plates ; if there
is extensive grooving, an overhaul is required.
• condition of the bypass. Clean it if dirty.
6. MAINTENANCE
