Chapter 3 HVAC Tools, Equipment, and Service Information 49
Crimping Tools
Crimping tools are made to crimp, or form, a fi tting
around a hose end. The major difference between types
of crimping tools is the size and shape of the collets. The
collets actually contact the fi tting and crimp it to the hose.
There are two common kinds of hose fi tting types, the
barb fi tting and the beadlock fi tting. A different crimping
machine is used to make each fi tting type. Each machine
and its related parts are dedicated and cannot be used to
make the other type of crimped fi tting.
Crimping tools can be operated by hand or by
hydraulic pressure. A typical hand operated crimping tool
is shown in Figure 3-23. Hand crimping tools are inexpen-
sive and can do a good job of making a crimped hose. The
hydraulic powered crimping tool, Figure 3-24, uses a small
hydraulic pump to create the pressure needed to operate
the hydraulic piston.
To use either type of crimping tool, select the proper
hose and hose fi ttings and lightly oil them. Then select the
proper collets and place them into the crimping machine.
Assemble the fi tting on the hose end and place the hose
and fi tting in the crimping machine. Operate the machine
to crimp the fi tting. After the crimping operation is com-
plete, make sure the crimp was made properly.
Figure 3-20. Clutch holding tools are often needed to keep the compressor clutch from turning while
the center bolt or nut is removed. A— Hub holding tool. B—Pulley puller. C—Hub and drive plate
remover and installer. D—Compressor pulley puller. E—Hub and drive plate remover/installer.
F—Clutch hub installation tool. (Kent Moore)
A
B
C
D
E
F