T
echnical
M
anual
hD8625 8-
5
/
8
” 35K T
ong
3.7
10. DOOR STOP CYLINDER
Periodically disassemble the door stop cylinders and coat the spring and cylinder with a general purpose lubricating oil.
I
llustratIon
3.D.10: D
oor
C
ylInDer
I
llustratIon
3.e.1: B
rake
B
anD
a
Djustment
E. ADJUSTMENTS
1.
Brake Band Adjustment:
The brake bands must be periodically adjusted to continue to provide smooth and efficient jaw cam action. If the cage plate turns with
the rotary gear, the jaws will not cam properly and, therefore, will not bite on the tubing or casing. Tightening the brake band against
the cage plates will increase frictional resistance, allowing jaws to cam properly and grip the casing. Adjust the brake band using the
adjustment nut and bolt set as shown in the illustration below. Do not over-tighten, as this causes excessive wear to the brake bands.
2.
Door Latch Adjustment
Normal operation of the tong may cause wear of the door latch, which will cause the door to develop a loose fit at the latch. A latch
cam plate is located at the top face of the door. The cam plate has eight positioning holes located on a 360 degree bolt circle. The
latch cam shaft extends down through the door and is secured at the top by a 3/8” hex head bolt. To make adjustments in door align-
ment, remove the 3/8” bolt and turn the cam with a wrench. When the door has been adequately aligned, replace the 3/8” bolt (see
illustration 3.E.2 next page).
M
ainTenance
BRAKE BAND
BRAKE BAND ADJUSTMENT
BOLT AND NYLOCK NUT
Summary of Contents for HD8625
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Page 83: ...Technical Manual HD8625 8 5 8 35K Tong 5 1 Parts and Assemblies HD8625 8 5 8 35K Tong ...
Page 84: ...5 2 HD8625 8 5 8 35K Tong Technical Manual Gear Train Layout H B C D H J A K E F G ...
Page 86: ...5 4 HD8625 8 5 8 35K Tong Technical Manual Support Roller A B D J C E H D E F G ...
Page 88: ...5 6 HD8625 8 5 8 35K Tong Technical Manual Door Pivot Roller A B D J C E H D E F G ...
Page 90: ...5 8 HD8625 8 5 8 35K Tong Technical Manual Rotary Idler Assembly A B C E B D F C D G G H J F ...
Page 92: ...5 10 HD8625 8 5 8 35K Tong Technical Manual Pinion Idler Assembly A B C E L D F K G J G H ...
Page 94: ...5 12 HD8625 8 5 8 35K Tong Technical Manual Pinion Assembly A B C E A D F B D G H E C ...
Page 102: ...5 20 HD8625 8 5 8 35K Tong Technical Manual Tong Leg Weldments A C D E F H G J B ...
Page 106: ...5 24 HD8625 8 5 8 35K Tong Technical Manual Motor Motor Mount A B C D E J F G H Q K P L M N ...
Page 108: ...5 26 HD8625 8 5 8 35K Tong Technical Manual Brake Bands A B C D E F G H J ...
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