![background image](http://html1.mh-extra.com/html/national-flooring-equipment/3397/3397_service-manual_3377258010.webp)
Maintenance
10
Fitting the Chain (Figure 3)
Before mounting the chain, it must be degreased.
The chain is supplied as a chain string and must be prepared during mounting. This is
done as follows:
1. Place chain on the sprocket so that the links lie in adjacent gaps between the teeth.
2. Close chain using a master link. With heavy chains or longer distance between the
shafts, use a pre-stressing tool to bring the two end links closer together so that the
master link can be inserted without being deformed.
Note:
Chain links with springs should have their closed sides pointing in the running
direction (L) of the chain (S). Slide in the link adapter (V); place the link plate opposite of
the spring and press it over the pin into the ring groove using a pair of tongs. Demount
the spring in the reverse order.
Maintenance and Repairs
A chain drive needs little maintenance if the correct chain has been selected, mounted
correctly for the application, and is not lubricated with grease. A chain guard protects the
drive chain. The chain guard prevents excessive contamination and accidents.
The drive must be cleaned every three months; on these occasions, check the alignment
of the chain sprockets and tension.
In order to clean thoroughly:
•
Remove the dirt on the outside of the chain drive using a hard or wire brush.
•
Wash the chain in mineral spirits or other solvent.
•
Clean the dirt from the internal parts of the chain by putting the chain in mineral
spirits or other solvent for approx. 24 hours. Move the chain several times back and
forth while in the solvent to clean the joints.
REPLACING THE WHEEL KIT
The wheel kit consists of the blast wheel, control cage, lock washer, and retaining bolt.
Demounting (Figure 4)
1. Remove the feed spout (A) by pulling it out of the control cage.
2. Loosen the cage clamps (B) and remove the control cage (Z).
3. Unscrew the four acorn nuts of the front cover plate (F); remove the plate.
4. Unscrew the retaining bolt (H) of the blast wheel (R) while holding the blast wheel
still. Take the blast wheel out of the housing.
5. Check the wheel adapter (D) for wear and replace if necessary.
Mounting (Figure 5)
1. Clean all threads and use a new blast wheel retaining bolt. Place blast wheel (R)
on the wheel hub (D) through the blast housing opening so the wheel fits with the
adapter pins (M). Tighten the blast wheel by the retaining bolt(H).
2. Re-attach the front cover plate (F) using the four washers and acorn nuts.
3. Insert the control cage (Z) in the center and clamp the control cage with the cage
clamps (B) so that the blast wheel can rotate free with an overall clearance of 1/8”
(3 mm) to the impeller. The blast wheel must rotate freely.
4. Preset the notches or guide lines, on the face of the control cage, to the 9:00 and
11:00 positions (OK and UK respectively) as shown in Figure 5.
FIG. 3
FIG. 4
FIG. 5
Содержание 3397
Страница 1: ...Read Manual Before Servicing Machine 403058 Rev D 3397 SHOT BLASTER SERVICE MANUAL...
Страница 2: ......
Страница 13: ...Parts List and Diagrams 13 OVERVIEW...
Страница 14: ...Parts List and Diagrams 14 WHEEL DRIVE ASSEMBLY...
Страница 15: ...Parts List and Diagrams 15 WHEEL HOUSING ASSEMBLY...
Страница 16: ...Parts List and Diagrams 16 TRACTION DRIVE ASSEMBLY...
Страница 18: ...Parts List and Diagrams 18 BASE SEAL ASSEMBLY...
Страница 19: ...Parts List and Diagrams 19 REBOUND ASSEMBLY...
Страница 20: ......