Rottler F103 Series, Installation Manual, Operation And Maintenance Manual

Page: 94 / 318

Section 5 Operating Instructions F103/4/5A Manual
www.rottlermfg.com
5-7
Normal Operating Procedure
The normal operation procedure on smaller V-blocks is to first pick up the block. Place the 502-1-82X
locator bar through the main bearings and hoist the block into the fixture. Pulling the block towards you,
with the locator against the positioners, will prevent jamming in the slot of the guides during the loading
and unloading operations. The locator bar is positioned with the word ‘UP’ that is on the end of the bar
facing up and away from the operator. (see figure 1) After the locator bar is engaged in the positioners,
pivot block outwards as you lower it. Slide block to the far left (this is the non adjustable position).
Make sure the block is firmly seated in place and not resting on pan-rail burrs or other interference
points. Accurate seating can also be a problem with extremely warped, distorted blocks. Another cause
of problems is failure to remove main bearing inserts. The locator bar has a relief for blocks with a small
main bearing or seal. Rotate locator bar clamps into position & lightly tighten the hand screws, applying
even pressure to both. Clamp the block securely with the main base clamp arms.
Warped or distorted blocks may require leveling of the deck surface in the long direction. This is possible
with the hand-screw assembly in the left-hand bar positioner. Loosen both clamp hand-screws and slide
the locator bar to the far right position. Retighten both clamp hand-screws. Raise or lower the adjusting
hand-screw as required. For the non-adjustable position slide locator bar to the far left.
Push fixture back into surfacing position with the back of the fixture on the Shim Stock. The shim stock is
put in place to raise the back side of the block, you can then use the Jacking Screw to raise and lower the
front of the block. There is a guide block (502-1-105) attached to the bottom of the fixture to aid in guiding
the fixture along the support ways.
Operate the block clamp arms, surface, and pull fixture back to the load position.
Loosen locator bar hand screws and rotate clamps out of the way. Lift the block, either from the deck
surface. Turn the block 180 degrees & reload to duplicate the operation on the other bank.
After turning the engine block 180 degrees the locator bar must be twisted 180 degrees also. Again the
word ’UP’ must enter into the positioners facing up and away from the operator. (See figure 1).
Figure 1
502-1-82X main bearing locator bar indexes at point A. When bank is reversed and the bar is twisted 180
degrees, point A still indexes the main bearing.
Point C holds the block down. When bank is reversed and the bar is twisted 180 degrees, point B holds
the block down.
Figure 2
502-1-82X main bearing locator bar indexes near bearing split line. Point C does not contact the bearing
cap but rests on matched spacers that are provided to fit in the bar positioners slot. If there is a means of
holding the block down such as block clamp towers, this method may be used in large bores in order to
properly index near the bearing split line. If extreme care is used this method may be used to index blocks
without bearing caps attached. (Optional clamp down must be provided).