How to Repair the Hold-Down Assembly of a Varimat

​The two hold-down assemblies and the green belt in the picture below keep the top layer of membrane flat on the bottom layer as it is heated by the nozzle, just before the drive tire presses down on it.

​Each hold-down assembly contains the following parts:

Item # in Drawing	Part #	Name
62	104.262	Circlip for shaft ø 8, Varimat
85	104.225	Pressure spring, 0.9 x 13.5 x 37.5 Varimat
200	108.125	Holding-down roller, Varimat
201	107.055	Guide Pillar, Varimat
202	107.056	U-profile, Varimat
203	107.077	Roller, hold down Varimat belt
204	104.267	Spring, roll pin 8 x 20 Varimat
205	100.299	Screw, raised cheese head M4 x 10

​Periodically check on each assembly that the U-profile (202) is tight to the guide pillar (201). Sometimes the screw (205) works itself loose. If this is not corrected, the screw may loosen entirely, and it and the U-profile (202), roll pin (204), roller (203) and spring (85) will fall off. 

Fixing a Loose Hold-Down Assembly

1. Loosen the screw (205) all the way by inserting a flat screw driver sideways into the slot of the screw and turning the guide pillar
2. Put the spring (85) aside
3. Put a drop of Loctite 242 on the screw thread
4. Put the spring (85) on the guide pillar (201)
5. Reinsert the screw and tighten 

Replacing a Lost Hold-Down Assembly

1. Contact STANMECH to order the necessary replacement parts. If the U-profile and its associated parts (202 through 205) are lost, it is less expensive to purchase item 200 even though the guide pillar (201) has not been lost. Confirm if the spring (85) and circlip (62) need replacement.
2. Remove the circlip (62) by inserting a small flat screw driver behind it, holding the back of the circlip and turning the screw driver gently until the circlip comes off. Remove the guide pillar.
3. Slide the spring and holding-down roller in place.
4. Lay the Varimat on its wheels so that the spring compresses and the top of the guide pillar, where the circlip goes, is visible.
5. Hold the back of the circlip with a long-nose vise grip and tap it on the guide pillar.

Assembling a Hold-Down Assembly from Parts

1. Put a drop of Loctite 242 on the screw (205) thread.
2. Attach the U-profile (202) to the guide pillar (201) using the screw (205). Tighten the screw by inserting a flat screw driver sideways into the slot of the screw and turning the guide pillar tight. This creates the holding-down roller.
3. Slide the spring and holding-down roller in place.
4. Lay the Varimat on its wheels so that the spring compresses and the top of the guide pillar, where the circlip goes, is visible.
5. Hold the back of the circlip with a long-nose vise grip and tap it on the guide pillar.

​Still having problems? We offer repair services by factory trained technicians.