HAMAR LASER L-708 User manual

WARRANTY
Hamar Laser Instruments, Inc., warrants each instrument and other articles of
equipment manufactured by it to be free from defects in materials and
workmanship under normal use and service, its obligation under this warranty
being limited to making good at its factory any instrument and other article of
equipment which shall within one year after shipment of each instrument and
other article of equipment to the original purchaser be returned intact to Hamar
with transportation prepaid, and which Hamar’s examination shall disclose to
Hamar’s satisfaction to have been thus defective; other than this express
warranty, Hamar neither assumes nor authorizes any other persons to assume for
it any other liability or obligation in connection with the sale of its products.
This warranty is not applicable to instruments or other articles of equipment
manufactured by other companies and limited by a warranty extending for less
than one year. In such an event, the more limited warranty applies to said
instrument or article of equipment.
This warranty shall not apply to any instrument or other article of equipment
which shall have been repaired or altered outside the Hamar factory, nor which
has been subject to misuse, negligence, or use not in accord with instructions
furnished by the manufacturer.
The software described in this manual is furnished under a license agreement
and may be used or copied only in accordance with the terms of the agreement.
It is against the law to copy the software on any medium for any purpose other
than the purchaser's personal use.
The information in this manual is subject to change without notice. No part of
this manual may be reproduced by any means, electronic or mechanical, without
written permission from Hamar Laser Instruments, Inc.
© Copyright Hamar Laser Instruments, Incorporated, 2019
5 Ye Olde Road, Danbury, Connecticut 06810

Table of Contents
Critical Note on Calibration.............................................................................................................1
Introducing the L-708 Laser Bore Alignment System .....................................................................2
The L-708 Laser Bore Alignment System Components ..................................................................3
Model L-708 Laser .......................................................................................................................3
Starting an Alignment with the L-708..........................................................................................4
Adjusting the L-708 Laser............................................................................................................5
Pulse/Continuous Modes for the L-708 Laser .....................................................................5
Attaching the Battery Pack...................................................................................................5
Replacing the Batteries ........................................................................................................6
Assembling the A-514CW for the L-708 Laser...................................................................6
Model A-512 2-Axis Self-Centering Target.................................................................................8
The A-514 A, B and C Self-Centering Laser and Bore Adapters ................................................9
Assembling the Bore Adapters ..........................................................................................10
The A-514GS and A-514GL Leg-Setting Gage .........................................................................10
Assembling the A-514GS and A-514GL...........................................................................11
Setting the Legs for the A-514GS (Using Small and Medium Bore Adapters).................12
Setting the Legs for the A-514GL (Using Large Bore Adapters) ......................................13
The Model R-1307 Readouts .....................................................................................................14
Model R-1307C .................................................................................................................14
Model R-1307-900/2.4 and R-1307-2.4ZB........................................................................14
Model R-358 Computer Interface ..............................................................................................15
Model R-1307 Readout -- Control Panel ...................................................................................16
Model R-1307C Readout -- Control Panel.................................................................................17
Bore9 Software...........................................................................................................................18
Setting up the Equipment...............................................................................................................19
Connecting and Setting Up the Readouts/Computer Interfaces .................................................20
Configuring the R-1307 or R-1307C for a Local Target............................................................20
Setting the Target Network ID and System ID ..................................................................22
Connecting to the R-358 Computer Interface ....................................................................22
Appendix A – The NORMIN Method (Bore and Spindle)............................................................23
Appendix B – Calculating Bore Diameters....................................................................................25
Appendix C – Technical Specifications.........................................................................................28
Appendix D – Care and Cleaning of Target Optics .......................................................................30

1
Critical Note on Calibration
When configuring the R-1307 Readout, it is critical to match the target ID with the target ID
identified on the serial number of the target. For example, if the target ID on the target serial
number label is 2, then the R-1307 must also be set to the number 2. If the target and readout and
not matched, a centering error of up to .002 in. (0.05 mm) can occur. In addition, the laser switch
setting (CONT. or Fixed vs. PULSE) must also agree with the R-1307 Readout setting. For
CONTinuous (Fixed) Mode, set the readout to F10.10 and for Pulsed Mode, set the R-1307 to
P10.10.
For example:  .. or  .. for R-1307 #2
For more information on the Pulse/CONTinuous modes on the laser, see Pulse/Continuous Modes (L-
705, L-706 and L-708 Lasers) on Page 5. For complete information on matching the target to the readout,
see Configuring the R-1307 or R-1307C for a Local Target on Page 20.

2
Introducing the L-708 Laser Bore Alignment System
Hamar Laser’s L-708 Laser Bore Alignment
System is the most accurate, versatile and
portable bore alignment laser system available.
The system can be used for a variety of bore
alignment and measurement applications,
including engine block bearings, compressor
bores, shaft bearing bores, and stern tubes.
Misaligned bearing bores cause premature
failure and require frequent replacement, more
downtime and higher maintenance costs.
Accurately aligned bores last longer and
prevent bigger problems before they occur.
Hamar Laser’s patented, self-centering target
adapter technology simplifies the setup process
and reduces setup time to minutes rather than
hours. Setting up the system takes only 15 to
20 minutes and alignments are performed up to
three times faster than those done with optical bore scopes or tight wires. Alignment data is real time, so
misaligned bores can be brought into tolerance very quickly.
Briefly, the system setup process is as follows:
•The A-514 Bore Adapters are adjusted to the desired bore radius using the Leg Setting Gage.
•The L-708 Laser and A-512 Target are inserted into their Bore Adapters.
•The entire laser and target assemblies are inserted into the two reference bores, where they self-
center.
•The laser’s angular adjustment knobs are used to set/tilt the laser to zero on the target, establishing
the reference bore centerline.
•With the laser now parallel to the end bores, the target can be moved (or a second target may be
added) to inner bores for alignment checks.
•Since alignment data in the target updates in the readout automatically, any errors can be adjusted
using the target as a live indicator.
L-708 Key Features
•Adaptable to most bore applications
•Fast, easy setup using simple, self-centering adapters
•Set up and begin capturing alignment data in less than 20
minutes
•Measure straightness for bore diameters from 3.5 in. (86
mm) to 40 in. (1 m)
•Adjustable legs fit any bore diameter
•Leg Setting Gage centers adapters to .0005 in. (0.0075
mm)
•Live, “real time” data display with large color graphics
•Choice of standard LED readout or add a second readout
to transmit readings wirelessly up to 200 ft. (61 m)
•Operational range up to 100 ft. (30.5 m) for the L-708 and
200 ft. (61 m) for the L-708LD
•Durable, rugged design

3
The L-708 Laser Bore Alignment System Components
Model L-708 Laser
The L-708 Laser provides a
straight reference line to which
any bore can be aligned and
measured. The laser mounts in
an adapter, and the laser and
adapter are then mounted in
either two reference bores or in
each end of a continuous bore.
The laser projects a beam
through the adapter and down
through the inside of a bore
toward the A-512 Target,
which is mounted in the
opposite reference bore. The
laser beam is steered to zero on
the A-512 Target, representing
the centerline of the two
reference bores.
The L-708 Laser has been
designed with a 1.2495 in. (31.74 mm) mounting surface. The laser beam is concentric to the OD to
within .0003 in. (0.008 mm) and is held in place in an adapter by powerful magnets. With a range of 100
feet (30 M) and under good environmental conditions, it is accurate to .005 in. (0.13 mm) over the entire
range. The L-708LD Long Distance Bore Laser has a range of 200 feet (60 M) and under good conditions
should hold .010" (0.25 mm) over the full distance. The L-708LD requires the use of the T-1218 2-Axis
Target, T-1220 or T-1240 targets (20x20 mm PSDs) since the laser beam diameter is larger (10 mm). By
following the NORMIN procedure described in Appendix A, accuracies of .0002 in. (.005 mm) in 10 feet
(3 m) can be achieved.
The L-708 provides a straight reference line to which any bore can be aligned and measured. The laser
mounts in an adapter, and the laser and adapter are then mounted in either the bore or the counter bore of
the gearbox spindle. The laser projects a beam through the adapter and down through the inside of a bore
toward the A-512 Target, which is mounted in the opposite end of the bore. The laser beam is then
adjusted (qualified) to project the actual axis of rotation of the gearbox.
Figure 1 – The L-708 Laser
Power
Switch
Battery Connector
Horizontal Coarse
Angular Adjustment
Horizontal Fine
Angular Adjustment
Center of Adjustment
Range Indicator for
Coarse Adjustments
Vertical Coarse Angular Adjustment
Vertical Fine Angular Adjustment
Vertical Fine
Angular Adjustment
Fine Adjust Tool (Bar)
to indicate center of
range for fine adjustments

4
The following describes the operational features of the L-708 Laser, shown
in Figure 1.
•The power switch has a lighted LED to indicate that power is ON.
•The battery pack connector accepts a slip-fit probe with a flexible
cord.
•The bubble level vial on the laser mounting flange is used for
rotational accuracy. When the bubble in the level vial is centered
horizontally, all adjustments controlling laser beam angle will shift the
laser beam vertically or horizontally with reference to the bore/target
axis. If the bubble is not centered, any adjustment to one laser axis will
change the laser beam position in both axes. The levels also provide
fixture mounting repeatability.
•Precision Angular Adjustment Knobs provide angular pointing control for the laser beam so it can
be tilted with a resolution of .0007 in. in 100 ft. (0.018mm in 30.5 m). The L-708LD laser has an
angular adjustment resolution of .0014 in. in 200 feet
(0.036 mm in 61 m).
•The Center of Adjustment Range Indicator for
Coarse Adjustmentsis a small window containing
a white dot. The white dot follows the coarse
angular adjustment of both axes. If the white dot
displays in the center of the window, both the
Horizontal and Vertical angular adjustments are
centered.
•The Fine Adjust Tool Bar swivels to indicate the
middle of the adjustment range of the fine
adjustment knobs. Rotate the bar (located under the
Vertical and Horizontal Fine Adjust knobs) and
tighten the knobs until they nearly touch the tool
bar. Rotate the bar away from the knobs and the
knobs are now in the middle of the adjustment
range.
Figure 3 – Fine Adjust Tool Indicator in the OUT position
Starting an Alignment with the L-708
To start the alignment, it is important to make sure the L-708’s angular adjustments are in the center of
their adjustment range. There are two indicators to aid in setting the adjustments in the center of their
range:
1. Coarse Angular Adjustment
Indicator – a white dot in a round window
that indicates how far off center the coarse
angular adjustments are. To start an
alignment, ensure the white dot is centered
in the window using the coarse angular
adjustments.
Figure 2 – Top of L-708 Laser
showing bubble level vial

5
2. Fine Angular Adjustment
Indicator – a tool has been provided
to fit between the Fine Adjustment
Knobs and the brass nut. This tool
acts as a gage to show you how far to
tighten the knobs to the center of
their adjustment range. Slide the tool
between the black Fine Adjustment
Knob and the brass nut and tighten
the knobs until they touch the tool.
Then loosen the knobs just enough so
you can remove the tool. The Fine Adjustment Knobs are now in the center of their range.
Adjusting the L-708 Laser
In a typical bore measuring application, the L-708 Laser is mounted concentric to one end of the bore by
means of a bore adapter. The L-708 laser beam is concentric to its 1.2495 in. (31.74 mm) OD mounting
surface to .0003 in. (0.008 mm) and the face of the laser has powerful magnets to hold the laser in the
adapter. Because fixtures are seldom perfect, the laser beam requires angular adjustments to make it
concentric to the bore. This is accomplished by placing the self-centering measuring target at the other
end of the bore and adjusting the angular adjustment knobs to set/tilt the laser to zero on the target,
establishing a reference bore centerline.
Pulse/Continuous Modes for the L-708 Laser
The L-708 Laser is equipped with a PULSE/CONTinuous switch, which manually switches the laser
beam between Pulsed and Fixed Beam Modes. Pulse Mode automatically removes the effects of excess
(ambient) background light for the R-1307 readouts, providing a more accurate reading. The R-1307C, R-
1307-900/2.4 and R-1307-2.4ZB support Pulse Mode when used with their respective interfaces. See the
R-1307 Operations Manual for further information.
Attaching the Battery Pack
The L-708 Laser battery pack is a stand-alone unit
that attaches magnetically. The battery pack has a
detachable cord with a probe at each end. One
probe attaches directly to a jack on the battery pack
and the other is inserted in the control panel of the
L-708 Laser.
1. Turn off the main power switch.
The main power switch must be off before
attaching the battery pack.
2. Insert the probe into the battery power input jack.
The jack is located on the end panel of the battery pack. Insert
the probe gently until it snaps into place.
3. Insert the probe into the laser power input jack.
The jack is located on the micrometer control, at the apex of the V and H axis arrows. Insert the
probe gently until it snaps into place.
Figure 4 – Attaching the L-708 Battery Pack

6
Replacing the Batteries
The battery pack uses two 9-volt batteries, housed in a two-part case held together by flathead screws.
Hamar Laser recommends using alkaline or nickel-cadmium (NiCad) cells for best performance.
1. Unplug the battery pack from the laser.
Pull the probe out of the laser control panel and gently set aside.
2. Unscrew the cover of the pack.
Locate and loosen the two captive flathead screws, and remove the cover.
3. Replace the two batteries.
Remove the old batteries and replace them with new 9-volt cells, being careful to orient them with
the negative terminal out (up).
4. Re-attach the cover.
Replace the cover and secure it to the battery pack with the screws.
Assembling the A-514CW for the L-708 Laser
The A-514CW (counter weight) is used in
conjunction with the L-708 Laser and the A-
514B and A-514C bore adapters to hold the
equipment in place.
1. Assemble the bore adapter for the L-708
Laser and locate the two poles shown in the
image below.
2. Screw each pole into the A-514B or A-514C Bore
Adapter.

7
3. Attach the counter weight at the end of each pole
and use the thumbscrew to tighten the counter
weight to the poles.
4. An extra counter weight and pole are included
with the A-514C. Insert the pole in the main
counterweight and use the thumbscrew to
tighten.
5. Slide the extra
counterweight on to
the extra pole and
tighten the larger
thumbscrew on the
counterweight to
tighten.

8
Model A-512 2-Axis Self-Centering Target
Hamar Laser has developed the world's first self-
centering target (A-512) that uses no moving
parts. It takes just seconds to position the target
in the bore for an accurate measurement down to
.0005 in. (0.0127 mm). The target is designed so
that the PSD, (position sensing detector) a piece
of silicon that detects the center of energy of the
laser beam, is centered axially between the four
feet of the adapter, two of which are offset
axially from the other two. This puts the PSD on
the pivot point of the adapter and allows the
angle of incidence to the laser beam to vary by
up to 45 degrees. The A-512 takes advantage of
this property by making the adapter slightly
larger than the bore. To insert the target into the
bore, attach the insertion handle (see Mounting
the Laser/Adapter and Inserting the Target on
Page 19).
The A-512 Target unit is comprised of a target cell, a bore adapter, and an insertion handle (see Figure
5). The target is inserted into the bore to sense the position of the laser beam. Laser beam position data is
displayed on a readout. As the bore is adjusted, the readouts display data in real time.
The A-512 target and adapter (in self-centering mode) are inserted into the reference bore. A
measurement is taken with the target in both the NORMal and INverted positions (see Appendix A – The
NORMIN Method beginning on Page 23). The two readings are averaged and the result is the starting
measurement for the laser. At each subsequent measuring point, two sets of readings (NORMal and
Inverted) are taken and averaged. Subtract the result from the reference measurement to obtain the
diameter change.
The target cell is a position-sensitive photo cell surrounded by a stainless steel housing. When light
contacts the photo cell, the continuous flow of current across the cell is altered. The location of the
contact is recorded as a change in voltage, which the digital readout or computer interface displays as an
offset from the target center. The effective cell sensitivity range is ± .100 in. (2.5 mm), and changes in the
x and y axis positions of the target can be displayed on a digital readout to within .0005 in. (0.0127 mm)
over 50 ft. (15 m).
The target cell has a milled keyway designed to slipfit onto a location pin in the bore adapter for self-
centering mode. Four matched and offset (90°) stainless steel legs serve to center the adapter in the bore.
Adapters are available in many different sizes for use in specialized bores.
Figure 5 – A-512Target with A-514A Small Bore Self-Centering Bore
Adapter

9
The A-514 A, B and C Self-Centering Laser and Bore Adapters
The A-514 self-centering laser and bore adapters
accurately and quickly position the laser and target on the
bore centerline. The adapters can be centered to the bore
to within .0005 in. (0.0127 mm). The adapters have
adjustable legs that allow them to be used for bore
diameters ranging from 3.5 in. (90 mm) to 40 in. (1m) and
the A-514B and A-514C come with counterweights to
prevent the assembled system from tipping. Three sizes
are available, as follows:
•A-514A for bores from 3.75 in. (95 mm) to 6.75 in.
(172 mm)
•A-514B for bores from 6.5 in. (165 mm) to 17.5 in.
(445 mm)
•A-514C for bores from 17.0 in. (432 mm) to 40.0 in.
(1 m)
Note: For bores over 1 m, half-bores, or where bore
surfaces are worn or rough, the T-218 Two-Axis
Universal Target and T-225L Large Bore Flange are used. The T-218 has a prism that flips out of the
way, allowing the laser beam to pass unobstructed through the target without removing it, which proves
useful for aligning multiple bores over long distances. For half-bores, the T-218 is used with the A-502A
Half-Bore and A-501A Bore Sweep Fixtures.
How the A-512 and A-514 Self-Centering Adapters Work
A-512/A-514 Target & Adapter
Adapter OD = Nominal Bore ID
Bore ID > Nominal ID
Target Tilts Forward
PSD Is Still Centered
Bore ID < Nominal ID
Target Tilts Back
PSD Is Still Centered

10
Assembling the Bore Adapters
The A-514A, B and C Bore Adapters are all assembled the
same way. Each adapter consists of two legs that cross each
other, forming an “X” shape. Using a bolt and Allen wrench
provided, screw the bolt down and tighten.

11
The A-514GS and A-514GL Leg-Setting Gage
The gages are used to set the A-514 Adapter legs to the correct bore diameter. The gages are available in
two sizes, depending on the size of the bore being measured. The A-514GS is used with the small (A-
514A) or medium (A-514B) bore adapters. The A-514GL can be used for all three adapters and must be
purchased if using the large bore adapter.
Figure 6 – The A-514GS (left) and A-514GL (right) Leg Fixtures
Assembling the A-514GS and A-514GL
1. Using the bolt and Allen wrench provided, tighten the hub to the
plate.
2. Once the hub is tightened, turn the plate right side up and slide
the spacer over the hub.

12
Setting the Legs for the A-514GS (Using Small and Medium Bore Adapters)
Example: (see Figure 7)
1. To measure a 6 in. bore, each leg must be set to 3 in.
2. Set the caliper to read 3.000 in.
3. Twist the locking nut on the caliper so it does not slide, then insert
the caliper inside the hub on the leg setting fixture.
4. Slide the leg setting gage into position and tighten the bolt using
the Allen wrench provided.
5. Slide the bore adapter over the hub and place the stop pin in the
desired hole.
6. Turn the bore adapter so it’s up against the stop pin and slide the
leg out so it rests against the leg setting ceramic plate.
7. Tighten the bolts with a 7/64 Allen wrench.
8. Remove the stop pin and turn the bore adapter one more time,
replacing the stop pin. Repeat the process for the next leg.
9. To set the remaining two legs, the bore adapter must be removed
from the hub and flipped. Secure the legs again using the same method.
Note: The caliper is used to set the legs to the nominal bore radius. The accuracy of the caliper’s measurement of
the radius is not important since the bore adapters can handle a small range of diameter changes (typically ± .010
in. to .025 in., depending on the adapter size). The most important part of the process is to ensure the legs are the
same length, which is done with the Leg Setting Gage. So if the digital caliper has an error of .0015 in., as long as
the legs are set to the same length using the Leg Setting Gage, the bore adapter will self-center to .0005 in. (0.0127
mm) or better.
Figure 7 – Setting the legs for the A-514GS

13
Setting the Legs for the A-514GL (Using Large Bore Adapters)
The large leg gage can be used for all three bore adapters. When setting the legs for the large bore
adapter you must use the fixture extension.
Example: (see Figure 8)
1. To measure a 30 in. bore, each leg must be set to 15 in.
2. If using the 8" fixture extension, insert the extension into the hub and rest the other end in the slot.
3. Set the caliper to 7 in. and press one end of the caliper against the pin of the extension.
4. Slide the leg-setting plate up against the other end of the caliper.
5. After the leg setting fixture has been set to the correct length when using the large bore adapter, slide
the hub spacer on the hub to balance the bore adapter.
6. Slide the large bore adapter over the hub on the spacer and follow the method described in Setting the
Legs for the A-514GS (Using Small and Medium Bore Adapters) on Page 12.
Figure 8 – Setting the legs for the A-514GL

14
The Model R-1307 Readouts
Readouts are used for viewing and interpreting the target data. The R-
1307 is a simple LCD readout that displays raw target data. The user
performs all calculations and plots the data manually. If the package is
to be used only for alignments, the readout is the simplest and most
cost-effective choice. The Model R-1307C, Models R-1307-900/2.4
and R-1307-2.4ZB (with ZigBee®radio technology) are compatible
with the L-708/L-708LD Bore Alignment System.
Model R-1307C
•Supports cabled (local) targets only
•Supports both pulsed-beam and continuous laser modes
•Functional replacement for the R-307 Analog Readout
Model R-1307-900/2.4 and R-1307-2.4ZB
•Supports both wireless targets or cabled (local) targets
•Supports both pulsed-beam and continuous laser modes
•Radio frequency available in either 900 MHz or 2.4 GHz ISM band
•Can also be used as an additional readout to receive data alignment data
transmitted from another R-1307 unit in master (poll) mode.
•The R-1307-2.4ZB can be used with the A-910-2.4ZB Computer
Interface to perform as a wireless readout.
Figure 11 -- A-910-2.4ZB Computer Interface
Figure 9 – R-1307 Readout
Figure 10 – R-1307KS Readout Stand

15
Model R-358 Computer Interface
If the alignment package is to be used for measuring bore
diameter, the R-358 Computer Interface may be used. The
R-358 couples with a portable computer to act as a readout
and allows the use of alignment software to perform
calculations, display live laser beam-to-target position
information, and plot results that can be saved and printed.
The R-358 computer interface provides exceptionally high
accuracy (.00004 in. resolution) for downloading target data
to Hamar Laser’s alignment software. The interface attaches
to the computer with an RS-232 cable and it is powered by a
lithium ion battery for long life and usage. An AC
adapter/charger is provided, and the unit features LED
charging and power indicators.
Figure 12- R-358 Computer Interface

16
Model R-1307 Readout -- Control Panel

17
Model R-1307C Readout -- Control Panel