Installation, Operation and Maintenance Manual
CD, HL & NC Ranges of Dri-Prime
®
Pumps
95-0019-0000 Iss 11
21
Pump types
CD160M Mk 2/ CD180M/ CD300M
(Figure 25)
HL130M/
HL160M/
HL250M
Take the seal seat (11) from the inboard assembly, lightly smear the O-ring with silicon based grease lubricant and carefully
push into the seat carrier.
Fit a new O-ring to the carrier and slide the assembly along the shaft to seat in the adaptor. Secure with cap head screws
and washers.
If necessary, carefully clean the seal seat (11) and seal face on the rotary head (13) with a suitable degreasing agent and
soft tissue.
Ensure that the grub screws (5) in the mechanical seal (3) are fully retracted so that they do not scratch the shaft during
assembly.
Carefully remove the rotary head (1) and O-ring (2) from the assembly. Do not place rotary head face down as this may
cause damage to the lapped seal face.
Take the mechanical seal (3), locate the spring in the face seal (13) and carefully slide the two along the shaft until the faces
touch.
Set the seal working length, apply thread locking compound (see Technical Data Section) and lightly tighten the drive
screws so as to centralise and secure the sleeve on the shaft.
NOTE:- a seal setting tool that bolts to the adaptor face is available for this task.
Ensure that the seal faces are still abutted and the working length is correct, then tighten the drive screws fully.
Take the remaining rotary head (1), lightly smear the O-ring with silicon based grease lubricant and place over the shaft.
Ensure it locates on the drive pins of the mechanical seal. Avoid getting any grease onto the lapped seal face.
Fit the seal seat (Item 12) to the carrier and retain with the retaining clamp. Ensure a new O-ring is fitted.
Pump types
CD160M Mk 1/ CD400M
(Figure 26)
HL110M/HL200M
Take the seal seat (11) from the drive end assembly and carefully push into the seat carrier. Fit a new O-ring to the carrier
and slide the assembly along the shaft to seat in the adaptor. Secure with cap head screws and washers.
Carefully clean the lapped seal face with a suitable degreasing agent and soft tissue.
Carefully remove the rotary head (10) and O-ring (9) from the assembly. Do not place the rotary head face down as this may
cause damage to the lapped seal face.
Take the sleeve assembly (8) and ensure that the drive screws (6) are fully retracted to prevent scratching of the shaft
during assembly.
Lightly smear the O-ring (9) with silicon based grease lubricant. Place the O-ring inside the rotary head (10). Avoid getting
any grease onto the lapped seal face.
Gently push the rotary head (10) onto the sleeve assembly (8) ensuring that the drive pins (7) are engaged in the slots of
the rotary head.
Carefully slide the sleeve assembly along the shaft until the seal faces butt together
Set the seal working length, apply thread locking compound (see Technical Data Section) and lightly tighten the drive
screws to centralise and secure the sleeve on the shaft. A special tool is available from Godwin Pumps Ltd to enable this
first seal working length to be set correctly. It is strongly recommended that this tool be used. Ensure that the seal faces are
still abutted and the working length is correct, then tighten the drive screws fully.
Carefully remove the rotary head (1) and O-ring (2) from the outboard assembly. Do not place the rotary head face down as
this may cause damage to the lapped seal face.
Take the sleeve assembly (3) and ensure that the drive screws (5) are fully retracted to prevent scratching of the shaft. Slide
the sleeve assembly along the shaft until it abuts the sleeve assembly (8) previously fitted. Apply thread locking compound
(see Technical Data Section) and secure in place by tightening the drive screws fully.
Lightly smear the O-ring (2) with a silicon based grease lubricant. Place the O-ring inside the rotary head (1). Avoid getting
any grease onto the lapped seal face.
Gently push the rotary head (1) along the shaft onto the sleeve assembly (3) ensuring that the drive pins (4) are engaged in
the slots of the rotary head.
Fit the seal seat (12) to the carrier and retain with the retaining clamp. Ensure a new O-ring is fitted.
