Ransburg MMA-303 Direct_Ind Charge Atomizer A12870 - Manual (Page 79)

MMA-303 Direct/Indirect Charge - Maintenance
LN-9269-11.3 76
To reinstall a cup, position the wrench as
shown. Insert a torque wrench into the square
in the wrench to approximately 50-60 lbs•in
(5.65-7.9 Nm) torque. Hold the cup and tight-
en the torque wrench in a counter-clockwise
direction. NOTE - True torque.
Bell Cup Installation
N O T E
There is a 3-inch center-to-center distance
between the bell cup and the 3/8-inch socket
square on the wrench. This distance must be
factored in when reading the proper torque on
the wrench.
Example: A desired true torque is desired us-
ing a 9-inch effective length torque wrench.
Wrench offset is 3-inches.
L = 9-inches
TT = 50lbs•in
E = 3-inches
DR = is dial reading.
DR =50 (9)
(9+3)
DR =37.5 lbs•in
Effective Length Torque Wrench
Bell Cup Removal Tool A12247-00 (65mm
Bell Cups Only) (Optional Accessory)
This tool is meant to aid in the removal of bell
cups that are abnormally tight on the spindle
shaft. Typically, bell cups are easily removed
by hand with the aid of the standard bell cup
wrench (A12061-00). To prevent bell cups
from becoming difficult to remove, care should
be taken to remove wet or old dried paint from
shaft and bell cup taper and threads before
bell cups are assembled to the atomizer.
Before using the bell cup removal tool, clean
the exterior of the bell cup with clean solvent
and dry it. This will improve the tool’s ability to
grip the cups surface.
To install the tool, first engage the bell cup
wrench (A12061-00) to the shaft hex behind
the bell cup. Place the bell cup tool (A12247-
00) over the front of the bell cup and tighten
the knurled portion in a counter-clockwise di-
rection until very tight (left hand thread). (See
“Tool/Bell Cup Engagement” figure for proper
engagement of tool on bell cup.) While hold-
ing the bell cup wrench on the spindle shaft,
grasp the T-handle on the bell cup tool and
turn in a counter-clockwise direction until bell
cup is loosened. If tool rotates or slips, tighten
tool further and retry.