Castle LB-23 Diagnostics Manual

LB-23 Diagnostic Solutions Index

Air Pressure at Primary Regulator…………………………………………… 23.10
Air Pressure at Secondary Regulator………………………………….………23.40

Belt Adjustments……………………………………………………............... 23.65

Collet Adjustment…………………………………………………...……….. 23.21
Cutting Cycle-time Adjustment…………………………………………...…. 23.23
Electrical Supply Check……………………………………………………… 23.80
Foot Switch Mechanics………………………………………………………. 23.84
Head Lubrication……………………………………………………………... 23.01
Index Pin Setting & Resetting……………………………………...………… 23.43
Motor Operation……………………………………………………………… 23.60
Secondary Regulator Hose Check…………………………………………….23.42
SQE Check…………………………………………………………...………. 23.90
SQE Removal & Replacement……………………………………………….. 23.91
Tabletop Adjustments………………………………………………………... 23.70
Tooling Check & Replacement………………………………………………. 23.20
Travel Limiter Adjustments………………………………………………….. 23.82
Wing Table Adjustments……………………………………………………... 23.71

Revised 2/9/2007

How To…

23.01
Head Lubrication

The head should be oiled every 30 to 40 hours of usage. The head, once it is broken in beyond its
initial start-up, should run very quietly with no loud metallic racket or grinding.
In order to maintain the machine in good working order, the head should never be run dry. The head
uses oil impregnated bushings that need to stay oiled for optimal performance.

The oil that is used in lubricating this machine consists of two ingredients: Non-Detergent, 30 WT
Motor Oil and Slick 50. The two are mixed at a ratio of 4:1 respectively.

SOLUTION STEPS:

1. Loosen the two plastic, tri-armed knobs that hold down the bit cover on top of the machine.
Remove the bit cover by lifting and sliding it to your right as you lift.

2. Locate the 4 lubrication holes in the top of the head. These may be partly covered by the spindle
housings, requiring a slight repositioning of the housings

Revised 2/9/2007

3. Add 10 to 15 drops of oil to each of the holes. The oil is picked up by the wick and distributed
evenly among the spindles

4. Locate the Drive Link Pins and add 1 or 2 drops of oil to each. The pins can be oiled once every
30 hours of usage. However, this should only be done if the head is in good adjustment, but still has a
metallic rattle.

5. After the oil is added the machine should be left running for AT LEAST 30 minutes and then all
excess oil wiped off. If the clean up of the oil is not thorough enough, the machine will throw oil on
the stock.

Revised 2/9/2007

How To…

23.10

Resetting Air Pressure at the

Primary Regulator

The primary regulator is located on the right side of the machine, just below the tabletop. There are
two regulators located in this spot. The primary regulator is located closer to the rear of the machine
of the two.

SOLUTION STEPS:

1. Setting internal pressure for the head can be achieved by turning the primary regulator counter­clockwise until the knob stops.

2. Next, mark the knob of the regulator so that you have a reference point to start from.

3. Using the reference point turn the regulator 5 ½ to 6 ½ turns to reach a sufficient air pressure.
(Approximately 80 to 85 PSI)

Revised 2/9/2007

How To…

23.20

Tooling Check and Replacement

The tooling for a Line Boring machine is designed to give maximum performance for an extended
period of time. Typically, all the bits will need to be replaced at the same time, but occasionally
individual bits will become damaged and need replacement.

SOLUTION STEPS:

1. To check the tooling turn off the machine and lift up the yellow guard by pulling the plunger locks
on either side of the guard.

2. Inspect all the bits. Look for bits that are chipped, angled, or significantly lower/higher than the
others. Another sign of uneven wear is if the bit (or bits), have changed in color to a dark blue.

Revised 2/9/2007

3. To replace bits use a 3/32 allen wrench to loosen the set screw in the bottom collar of the spindle.

4. Remove the old bit by pulling down on it while grasping it firmly.

5. Do the reverse to install. Make sure that the flat part of the bit shank is aligned with the set screw
for tightening.

Revised 2/9/2007

How To…

23.21

Collet Adjustment

There are two collets per spindle, making 46 collets per head. The collet on the bottom of the spindle
is used to lock the drill bit into the spindle assembly.

The upper collet is used to hold the entire assembly to the head.
To get the best results the upper shaft collar should pushed as close to the snap ring as possible, and
then tightened.

Revised 2/9/2007

How To…

23.23

Cycle Time Adjustment

Two adjustments control the amount of time that the cutting cycle takes to complete:

1. The air pressure to the head is set at the primary regulator closest to the rear of the machine.

2. The first valve activated in the foot switch is supplied with air from the secondary regulator,

which is the one closest to the front of the machine. This, in turn, supplies air to the index
pins.

The primary regulator should be set at 80 to 85 PSI.

SOLUTION STEPS:

1. Setting internal pressure for the head can be achieved by turning the primary regulator
counter-clockwise until the knob stops.

2. Next, mark the knob of the regulator so that you have a reference point to start from.

3. Using the reference point turn the regulator 5 ½ to 6 ½ turns to reach a sufficient air pressure.
(Approximately 80 to 85 PSI)

4. The foot switch can also effect the cycle time of the machine. The valve should be fully
closed when the pedal is not depressed. If the valve is left partially open then the pressure to the
air bladder will need longer to build up, thus adding time onto the cycle. Likewise, if pressing the
foot pedal doesn’t fully open up the valve then full pressure will not be reached either.

Revised 2/9/2007

5. This can be checked by partially dismantling the foot switch and checking the foot
switch spring against this photo to make sure the part is in good condition. It should retain the
illustrated shape when not under pressure.
* Please note that it is not necessary to dismantle the foot switch to the point illustrated here in
order to view the spring.

6. If the pedal spring needs to be reset please see procedure 23.84

Revised 2/9/2007