MAYCO C-30HDNI PUMP — OPERATION AND PARTS MANUAL — REV. #0 (05/15/03) — PAGE 45
You may be seriously injured if you attempt to install the drive
chain while the pump is running.
Turn-off the engine and lock
out gears and sprockets before attempting installation.
Once installed, the drive chain must be guarded to prevent
personal injury or properly damage in the event the chain
separates during operation.
NEVER run pump with drive chain
guard removed.
Disassembling or Assembling Drive Chain
The clearance between pin and bushings is very small
(Figure 33), on the order of .003 to .005 inches. A
lubricant must be thin enough to flow into the chain. SAE
30 weight oil is about right for room temperature. Lighter
oil should be used for lower ambients and heavier for
higher operating temperatures. Grease should not be
used as it cannot penetrate chain clearances.
WARNING
The components of the drive chain are hardened parts. Striking
these parts may cause metal chips to break off from the chain or
the tools used resulting in personal injury. During all stages of
chain disassembly and assembly, wear
safety glasses to
prevent metal parts or chips from entering your eyes and have
personnel in the immediate area do likewise.
WARNING
ALWAYS wear approved eye protection.
Sight Hazard
Chain-Link Pin Removal
1. If chain is of cotter pin- type construction, remove cotters.
2. If chain is riveted type construction, grind pin heads off so pin
ends are flush with the linkplate.
3. Drive pins out of linkplate using a Diamond pin extractor
Model P/N 113 or 135. Some multiple strand chains or large
pitch models will require a hammer and punch or a press to
remove the pins.
Installation Of Coversides
Diamond Chain coversides are manufactured three different
ways:
■
Slip Fit
■
Modified Press Fit
■
Full Press Fit
Modified and Full Press Fits require some patience and tools
to assemble and/or disassemble. Use vice grips, plumbers pliers
or a small hammer to drive coversides onto pins.
Installation of Spring Locks and Cotter-Pins
After coversides have been installed, install spring locks or
cotters (depending on chain design). Avoid using bent or worn
cotters or spring locks. After spring locks (or cotters) are installed,
lightly tap pin ends to position these parts snug against the
coverside for additional support.
Tips To Remember
■
Chian will break if mused or abused
■
Serious injury or property damage can result if chain is
installed incorrectly.
■
Select, install, guard and maintain chain in accordance with
equipment manufacturer and "Diamond Chain Company's
recommendations.
■
Read chain assembly instructions before attempting to install
chain on pump sprocket wheel.
■
Knowing more about how the chain is constructed may help
in assembly and disassembly. Further information may be
obtained by calling or writing Diamond Chain Company
TM
.
C-30HDNI PUMP — MAINTENANCE (PUMP)
Figure 33. Chain-Link Cross Section
Go to Discount-Equipment.com
to order your parts
