3M MMHTA-18 User Manual

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Motorized Man ual Highway Tape Applicator (MMHTA-18)
Information Folder 5.15
July 1995
Description
The 3M™ Motorized Manual Highway Tape Applicator (MMHTA-18) is a motorized, two­wheeled device for applying 3M™ Stamark™ and Scotch-Lane™ pavement marking tapes (See Figure 1). The device is specifically designed to apply pavement markings precoated with pressure sensitive adhesive during and immediately follow­ing asphalt resurfacing operations. It can also be used to apply pressure sensitive adhesive coated markings on existing surfaces or temporary mark­ings used in construction work zones.
Table of Contents
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 1
Product Width and Spacing . . . . . . . . . . . . . . . . . . . . . . . Page 2
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2
Application Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2
Application Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2
Pre-Application Preparation . . . . . . . . . . . . . . . . . . . . . . . Page 3
Tape Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3
Tape Cutting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3
Tamping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5
Shipping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5
Side View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8
Top View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9
Figure 1
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Application Techniques (Refer to Diagram A)
Pre-marking:
Using 200-250 ft. (60-70 m) of light rope, chain or thin wire cable for a guideline, mark the skip sequence on the chain to be followed. Example: A sash chain marked to the proper sequence with 1-inch (2.54 cm) spiral key rings.
Example: For a 10 ft. (3 m) skip line and a 30 ft. (9 m) space (10-30 sequence):
1) Mark point (A), the beginning of the first skip line, about 8 feet (2.44 m) from the beginning of the chain to line up applicator.
2) Measure 10 ft. (3 m) and mark point (B), the end of the skip line.
3) Measure 30 ft. (9 m) and mark point (A), the beginning of the next skip line.
4) Repeat steps 2 and 3 throughout the remaining length of the guideline so that the last mark is at point (A).
Figure 2
Diagram A
Product Width and Spacing
Several combinations of tape widths and spacing can be applied using the MMHTA-18. Combina­tions of solid and skip lines may be applied simu­taneously. The 3M™ Manual Highway Tape Applicator can be used to apply all Stamark and Scotch-Lane pavement marking tapes at maximum standard roll lengths. NOTE: If special ordering tape, the maximum roll diameter cannot exceed 20 inches (50.8cm) if the material is to be applied with a MMHTA-18. Consult your 3M representi­tive to determine the availbility of the MMHTA-18 in your area.
Operation
The tape applicator can be operated by one person. The following application rates are based on asphalt paver speeds of 25 - 50 ft./min. and a walking speed of 100 ft./min. 10:30 Skip 750 ft./hr. 15:25 Skip 1125 ft./hr. Solid Line 1500 ft./hr. Solid / Skip (NPZ) 2500 ft./hr. Double Solid 3000 ft./hr. Overall Average 1000 ft./hr.
NOTE: The application rates shown are intended as guidelines and may vary with project condi­tions.
Procedure for Application of Pavement Markings
Load the tape and thread it over the 2-inch (5.08 cm) diameter aluminum roll, adhesive side up (See Figure 2). Feed the tape through the CLAMP to the CUTTER PLATE. Adjust the GUIDE BARS at the sides of the tape rolls to hold them securely in position. The guide bars should be adjusted to allow the roll to rotate freely, but not move side to side. Stamark pavement marking tapes can be ordered with the adhesive side of the tape wound inward or wound outward. Both types of rolls will work with the MMHTA-18; however, the tape wound adhesive side out is recommended. The tape wound adhesive side out will develop a natur­al curl that positions it to curve toward the silicone applicator roll as it passes through the cutting plate. CAUTION: Do not activate the cutting knife with the foot pedal while threading tape.
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Figure 3
Pre-Application Preparation
1. Inspect cutting blades, clean and adjust if nec­essary. See Maintenance.
2. Check all fastening hardware and tighten if necessary. Do not overtighten. Use self-lock­ing hardware if replacing missing nuts or bolts.
3. Engine pre-operation check. See Maintenance for maintenance intervals.
A. Oil: Use Honda 4-stroke oil, or equivalent detergent, premium quality motor oil. SAE 10W/30 is recommended for general all-tempera­ture use.
- Remove the oil filler cap/dipstick and wipe clean.
- Insert the dipstick into the oil filler neck, but do
not screw it in.
- If oil level is low, fill to the top of the oil filler
neck with recommended oil.
B. Air Cleaner: Check the air cleaner elements to be sure they are clean and in good condition. Clean or replace the elements if necessary.
C. Fuel: Remove the f iller cap and check the fuel level. Refill the tank if the fuel level is low. Do not f ill above the shoulder of the fuel strainer.
Tape Application
1. Determine where the first skip or long line
starts by measuring from the last existing skip or reference mark and the side of the road. Offset the premarked chain at least 12 inches (30 cm) from the center of where the new markings will be applied.
2. Lay the guideline out and adjust the pointer to
the side of the applicator. Position the applica­tor even with the pre-marking chain, and posi­tion the pointer to the side as shown.
3. To star t application, position the right hand in
the center of the clamp handle when moving the handle forward to aid in keeping the appli­cator moving in a straight line when star ting tape application (See Figure 3). Slowly move the clamp handle forward while squeezing the clutch lever to move the applicator forward at about the same speed. After tape application has begun, immediately release the clamp han­dle to allow the tape to move freely. As the tape applicator is moved forward, start the pavement marking each time the pointer passes over “A,” and cut the pavement marking each time the pointer passes over “B.”
4. When the last mark on the guideline is reached,
start the next pavement marking, stop the machine and again lay the guideline out in front of the pointer.
Tape Cutting
Release the clutch bar and bring the applicator to a complete stop over the proper marking. Back-up 1/2 inch (1.27 cm) before cutting the tape and release the foot pedal slowly. Do not attempt to cut the tape while moving. Cutting the tape in motion will stretch and tear the tape, causing the next line to start off center.
When cutting a single line or both lines of a dou­ble line, depress either the right or left foot pedal to the lowest position (See Figure 4).
When cutting a single line while applying a double line, depress the corresponding foot pedal. Depressing the foot pedal too far will cut both markings.
Figure 4
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Tamping
When inlaying pavement markings in new asphalt concrete surfaces, tamp the markings during the f inal compaction (finishing roller) of the mat. After application of markings on existing surfaces, tamp the tape thoroughly with the 3M™ Roller Tamper Car t (RTC-2) with a minimum 200 lb. (90 kg) load, or slowly (2-3 mph) drive over the tape three times with a vehicle tire. The vehicle must be equipped with a pointing device to aid in keeping the vehicle on the tape, making three passes forward over the tape. Use a vehicle tire on long line markings only. Do not attempt to tamp intersection markings with a vehicle tire.
Tamping is most important!
When using the RTC-2 Roller Tamper Cart with 200 lbs. (90 kg.) of weight:
• Do not twist or turn the tamping device on the tape.
• Make three passes back and forth over each part of the tape.
• When tamping symbols, start in the center and work to the outside edges.
• Make sure all edges are fir mly adhered.
• Open road to traffic as soon as tamping is
complete.
Maintenance
Keep All Fasteners Tight Lubrication:
All the pivot points and sliding areas should be kept lubricated with light oil penetrant such as 3M™ Five-Way Penetrant or similar pene­trants such as WD-40.
Cleaning: The r ubber application roller wheels and cutting mechanism must be kept clean. 3M™ Citrus Base Industrial Cleaner or any natural citrus based cleaner may be used on the wheels and knives. Solvents may be used occasionally for dif­f icult cleaning problems. A spray bottle of cleaner is useful to prevent asphalt buildup on the wheels and adhesive buildup on the knives during opera­tion.
Caution: Do not use solvents or petroleum prod­ucts on the silicone application roller when work­ing on new, hot asphalt surfaces. A paint scraper or putty knife should be used to clean the asphalt buildup from the scraper and cutter mounting bar. To prevent asphalt buildup around the roller, addi­tional clearance can be provided by loosening the scraper mounting screws and sliding the scraper back. Tighten the screws. Second, remove the cut­ter mounting bar and grind 1/8 inch (3.175 mm) off the bottom. Replace the bar.
Each Every 50 Every 100
Use Hour Hours
Engine Oil Check Level X X
Change*
Air Cleaner Check X X
Clean*
Spark Plug Clean and X
Readjust
*Service more frequently when used in dusty areas.
Adjustments
The SCRAPER BAR, which is readjusted by the manufacturer to prevent excess materials from ac­cumulating on the application roller, should be pe­riodically checked for wear and rotated if neces­sary. The bar should contact the rubber roller across the full length of the roller.
The KNIVES are readjusted by the manufacturer to slide across each other with a minimum of fric­tion in a scissors action. Adjustment is needed when foil construction tapes are not cleanly cut. Either the STATIONARY KNIFE or the SLIDING KNIFE may be adjusted (See Figure 5). To adjust the stationary knife, loosen the mounting screws slightly. Turn the set screws to bring the cutting edge down, and retighten the mounting screws. The same procedure is followed to adjust the slid­ing knife. Each knife has two cutting edges. The knives may be removed and new cutting edges exposed. The knives may be sharpened after the cutting edges are dull.
Figure 5
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Troubleshooting
Tape Does Not Advance:
1. If the clamp springs have been overly stretched, there will not be enough tension to advance the tape. The springs should be replaced.
2. If the GUIDE BARS are too tight to the roll, the tape will not advance properly. The bars should be positioned so that the tape can advance freely but hold the tape from moving side to side.
3. If the teeth on the clamp are severely worn, there will not be enough force to advance the tape. See Replacement Parts or call your 3M representative.
4. Check to see if the tape releases from itself properly. There should be no adhesive picking from the back side of the tape to the topside of the next layer.
Tape Does Not Cut:
The tape will not cut cleanly if cutting is done while the applicator is in motion. If the knife edges are dull or out of alignment, the knives should be sharpened and adjusted. (See Adjustments.) Clean adhesive buildup from knives. (See Maintenance.)
Shipping
The MMHTA-18 must have the fuel drained prior to shipment in an enclosed area. It is recommend­ed to transport the MMHTA-18 using a utility trailer.
Replacement Parts
The following is a complete listing of available re­placement parts for the 18-inch (45.72 cm) wide Motorized Manual Highway Tape Applicator (MMHTA-18). When ordering, please note the “MH-x” number in the right column. A complete description of all parts included for each order entry number is provided. Some parts are not available separately, so take time to find the prop­er order number that contains all the parts needed.
Alphabetical Listing of Title Items: See the chart on the following page for a complete listing.
Aluminum Roll Assembly MH-41 Bar Guide Assembly MH-4 Cartridge Bearing MH-56 Clamp Assembly MH-46 Clamp Pivot Shaft MH-47 Clamp Spring (small) MH-61 Clamp Spring (large) MH-10 Clutch Rod Assembly MH-55 Cutter Bar MH-45 Cutter Blade - Top MH-43 Cutter Blade - Bottom MH-44 Cutter Spring Assembly MH-14 Drive Axle Assembly MH-51 Drive V-Belt MH-57 Engine - 5.5 HP Honda MH-59 Guide Clamp (front) MH-12 Guide Clamp (rear) MH-13 Idler Pulley Assembly MH-54 Pointer MH-25 Pointer Assembly MH-39 Pointer Clamp Assembly MH-18 Power Transfer Shaft Assembly MH-53 Roller Chain Assembly MH-58 Side Frame Connecting Rod MH-49 Silicone Rubber Roll MH-50 Stock Roll Shaft MH-40 Stop Clamp MH-20 Swivel Caster Assembly MH-16 Tape Guide MH-11 Vibration Mount MH-60 Wheel Assembly MH-52
NOTE:After locating the proper replacement part, check the following table to see a complete listing of hardware included with each assembly.
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Code Description MH-4 Bar Guide Assembly
(2) Screw, Soc. Hd. Cap, Stl, Zinc Plt., 1/4-20 x 1-1/4 (1) Screw, Soc. Hd. Cap, Stl., Zinc Plt., Loc-Wel, 1/4-20 x 5/8
MH-10 Clamp Spring (large) Assembly
(1) Screw, Hex Hd. Cap, Stl., Zinc Plate 1/4-20 x 7/8 Lg. (1) Nut, Hex, Stl., Zinc Plt., 14-20
MH-11 Tape Guide
(1) Tape Guide
MH-12 Guide Clamp (front) Assembly
(1) Wing Nut, Stl., Zinc Plt., 3/8-16
MH-13 Guide Clamp (rear) Assembly
(1) Wing Nut, Stl., Zinc Plt. 3/8-16
MH-14 Cutter Spring Assembly
(2) Screw, Hex Hd. Cap, Stl., Zinc Plt., 1/4-20 x 3/4 Lg. (2) Nut, Hex, Stl., Zinc Plt., 1/4-20
MH-16 Swivel Caster Assembly
(4) Screw, Hex Hd. Cap, Stl., Zinc Plt., 1/4-20 x 3/4 Lg. (4) Nut, Hex, Stl., Zinc Plt. 1/4-20 (4) Lockwasher, Stl., Zinc Plt., 1/4
MH-18 Pointer Clamp Assembly
(1) Pointer Clamp (2) L-Screw
MH-20 Stop Clamp
(2) Stop Clamp
MH-25 Pointer
(1) Pointer (2) Pointer Clamp (4) L-Screw
MH-39 Pointer Assembly
(1) Pointer Frame (1) Pointer (2) Pointer Clamp (1) Pointer Pin (4) L- Screw (1) Swivel Caster (4) Cap Screw, Hex. Hd., Stl., Zinc Plt., 1/4-20 x 3/4 Lg. (4) Nut, Hex., Stl. Zinc Plt., 1/4-20 (4) Washer, Lock-Stl., Zinc Plt. 1/4 (1) Hitch Pin Clip, Stl., Zinc Plt., .093 Wire x 1-3/4 Lg.
MH-40 Stock Shaft Roll
(1) Stock Roll shaft
MH-41 Aluminum Roll Assembly
(1) 2 inch (5.08cm) Diameter Roll (2) Flanged Bearing-Oilite No. FF-1014 (2) Set Screw-Hex. Soc., Cup Point 1/4-20 x 3/8
Code Description MH-43 Cutting Blade - Top
(9) Cap Screw-Hex. Soc., Stl., Zinc Plt. #10-24 x 5/16 Lg Loc-Wel (10) Set Screw-Hex. Soc., CupPoint Zinc Plt., #10-24 x 3/8 Lg. Loc-Wel
MH-44 Cutting Blade - Bottom
(9) Cap Screw-Hex. Soc., Stl., Zinc Plt. #10-24 x 1/2 Lg. Loc-Wel (8) Set Screw-Hex. Soc., CupPoint Zinc Plt., #10-24 x 3/8 Lg. Loc­Wel
MH-45 Cutting Bar
(1) Cutting Bar
MH-46 Clamp Assembly
(1) Windscreen (2) Cap Screw-Hex. Soc., Stl., Zinc Plt., #10-24 x 5/16 Lg. Loc-Wel
MH-47 Clamp Pivot Shaft Assembly
(2) Screw, Soc. Hd. Cap, Loc-Wel, Stl., Zinc Plt., 1/4-20 x 3/4 Lg.
MH-49 Side Frame Connecting Rod
(2) Cap Screw-Hex. Hd., Stl., Zinc Plt. 1/2-13 x 1 Lg.
MH-50 Silicone Rubber Covered Roll
Assembly
(3) Roll, Silicone Rubber Covered ­4 in. dia. (6) Bearing, Flange Series - General #32662-88 (2) Set Screw, Hex. Soc., Cup Point Zinc Plt. 1/4-20 x 3/8
MH-51 Drive Axle Assembly
(1) Axle (4) Washers (1) Key - 3/16" Sq.l X 1.2 Long (1) Sprocket, 30 Tooth 3/4" Bore Boston #SSC75 (1) Collar, Set Screw - 3/4" Dia. Boston #SSC75 (4) Inner Race, Torrington #IR-1224
MH-52 Wheel Assembl y
(1) Wheel - Modified (1) Spacer - Wheel Bearing (2) Bearing, Torrington #JHTT-1614 (2) Bearing - Clutch Torrington #RC-162110
MH-53 Power Transfer Shaft Assembly
(1) Shaft - Power Transfer (2) Bearing - Roller Torrington #JTT-1410
MH-54 Idler Pulley Assembly
(1) Pulley - Idler (2) Pulley - Bearing Fafnir #FS-3-KDD (1) E-Ring - 3/8 Dia. Shaft, Truarc #5133-37
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Code Description MH-55 Clutch Rod Assembly
(1) Rod - Clutch (Upper) (1) Rod - Clutch (Lower) (1) Turn Buckle - McMaster #30125T4 (2) Clevis - Rod - Bimba #D-10139-A (3) Nut, Lock, Grade 2 Toplock 1/4­20 Unc, Stl, Zinc Plt.
MH-56 Cartridge Bearing
(1) Cartridge Bearing, Fafnir RCJC-3/4
MH-57 Drive V-Belt
(1) V-Belt, Gpl Premium, Dayco #L430
MH-58 Roller Chain Assembly
(1) Chain, Roller, ANSI #40 1/2 in. Pitch, 2 ft. Long (1) Chain Link #40, +in. Pitch
Code Description MH-59 Engine - 5.5 HP Honda
Engine 5.5 HP, 6:1 Reduction, Exhaust Deflector, Honda #GX160-K1HX2
MH-60 Vibration Mount
Vibration Mount, 70 Durometer, McMaster #64875K64
MH-61 Clamp Spring (small) Assembly
(2) Lee Spring #LE-037D-9-MW (4) Screw, Bottom Hd. Cap, Stl., Zinc Plt. 1/4-20 x 3/4 Lg. (2) Screw, Soc. Hd. Cap, Stl., Zinc Plt., #10-24 x 1/2 Lg.
(1) Blue Line Print of Drawing
For fur ther information, contact: 3M Traff ic Control Materials Division,1-800-553-1380. Follow instructions to reach Technical Service for Pavement Markings. In Canada call 1-519­452-6201.
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3M assumes no responsibility for any injury, loss or damage arising out of the use of a product that is not of our manufacture. Where reference is made in literature to a commercially available product, made by another manufacturer, it shall be the user’s responsibility to ascertain the precautionary measures for its use outlined by the manufacturer.
Important Notice
All statements, technical information and recommendations contained herein are based on tests we believe to be reliable, but the accuracy or completeness thereof is not guaranteed, and the following is made in lieu of all warranties, express or implied. Seller’s and manufacturer’s only obligation shall be to replace such quantity of the product proved to be defective. Neither seller nor manufacturer shall be liable for any injury, loss or damage, direct or consequential, arising out of the use of or the inability to use the product. Before using, user shall determine the suitability of the product for his/her intended use, and user assumes all risk and liability whatsoever in connection therewith. Statements or recommendations not contained herein shall have no force or effect unless in an agreement signed by officers of seller and manufacturer.
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Traffic Control Materials Division
3M Center, Building 225-5S-08 3M Canada 3M Mexico, S.A. de C.V. P.O. Box 33225 P.O. Box 5757 Apartado Postal 14-139 Printed on recycled paper St. Paul, MN 55133-3225 London, Ontario N6A 4T1 Mexico, D.F. 07070 75-0300-1799-2
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