Quantcast SETTING THE NEEDLE BAR

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
Use 135 x 7 needles with machines set with 1/4-inch clearance under the presser foot, and 135 x 17 needles with those set with 3/8-inch clearance (lift). Adjustments Adjustments to the 211 W 151 are basically the same as for 111 W 151. These adjustments are discussed in the following text. SETTING THE NEEDLE BAR.— Place the needle bar up into the needle bar holder as far as possible. Hold in this position and turn the balance wheel toward the operator until the needle bar is at its lowest position. When in this position, set the bar so the upper timing mark is just visible below the needle bar frame, and tighten the needle bar connecting stud pinch screw. In case the needle bar does not have timing marks, set the machine to zero stitches per inch and place the needle bar up in the holder as far as possible. Turn the balance wheel by hand until the bar is at its lowest position. After reaching the lowest position of the needle bar, continue turning the balance wheel toward the operator until it reaches 3/32 inch above its lowest point, then set the eye of the needle 1/16 inch below the point of the sewing hook. SETTING THE NEEDLE.— To set the nee- dle, insert the needle shank as far as possible into the needle bar with the long groove of the needle to the left and tighten the screw. (See figure 9-33.) 240.82 Figure 9-33.—Setting the needle. 240.83 Figure 9-34.—Needle bar rock frame rockshaft damp screw. RELATIVE POSITION OF’ NEEDLE BAR AND PRESSER BAR.— To set the relative position of the needle bar to the presser bar, loosen the needle bar rock frame rockshaft clamp screw, which is located behind the cover plate on the front upright position of the arm (fig. 9-34). Set the needle bar so the distance between the needle bar and presser bar is 17/32 inch. Retighten the clamp screw. NOTE: A handy tool for this adjustment can be manufactured locally from a thin piece of metal stock filed to exactly 17/32-inch width. This gauge should be placed between the two bars while the clamp screw is being tightened. This enables the operator to keep pressure on the loose needle bar. ADJUSTMENT HEIGHT OF SEWING HOOK.— Before attempting to adjust the height of the sewing hook, it is necessary to make a feeler gauge for testing the height. This gauge can be made of 0.032-inch shim stock, or a regular feeler gauge can be cut or trimmed down so it will fit in the small groove in the throat plate, which retains the bobbin case stop finger. If, after testing, the hook height is unsatisfactory, turn the balance wheel so the two setscrews in the bottom of the hook are accessible; loosen them with an Allen wrench. Remove the cloth washer from the bobbin case and turn the hook until the height adjusting screw is directly 9-27



Aviation News
DOT Celebrates 25th Anniversary of ADA
A look at our recent past and a peek into...
faa.gov
Four Corners of the Country
July 30- The July/August 2015 issue of FAA Safety Briefing...
faa.gov
UH-X Order Could Boost 412 Commercial Sales
Japan’s order for 150 military versions of Bell Helicopter’s 412EPI...
aviationtoday.com
Australian Air Force Acquires First Boeing Growler
Amazon’s rendering of a segregated UAS airspace. Photo: Amazon [Avionics...
aviationtoday.com
Northrop Grumman CEO Looks to UAS to Grow Revenues
[Avionics Today 07-29-2015] Northrop Grumman Chief Executive Officer Wesley Bush...
aviationtoday.com
Engility Wins Contract to Support US Air Force GPS
[Avionics Today 07-28-2015] The U.S. Air Force has awarded TASC,...
aviationtoday.com
US Navy Awards Harris Corporation $29 Million Avionics Contract
F/A 18 Super Hornet. Photo: Boeing [Avionics Today 07-28-2015] The...
aviationtoday.com
First Bell 525 Delivery Slated for 2017
The 525 Relentless won’t be delivered to its first operators...
aviationtoday.com
Australian Military Training System Approved for Airbus Helicopters H135
Airbus Helicopters has achieved Factory Acceptance of HATS01, the first...
aviationtoday.com
Airbus Helicopters H135 Receives Factory Acceptance for HATS
Airbus Helicopters has achieved Factory Acceptance of HATS01, the first...
aviationtoday.com
Rockwell Collins Sees Softening Aftermarket Amid Rising Connectivity
Rockwell Collins connectivity segment looks to offset other market softness....
aviationtoday.com
Harris and CPqD to Monitor CNS Systems for Brazilian Air Force ATC
[Avionics Today 07-27-2015] Brazilian Air Force Air Traffic Control (ATC)...
aviationtoday.com
Harris Exec Outlines Electronic Warfare Strategy
Andy Dunn, vice president of business development at Harris. Photo:...
aviationtoday.com
Northrop Grumman Lays Out Fifth Generation C4ISR Framework
[Avionics Today 07-24-2015] Northrop Grumman Corporation has set out a...
aviationtoday.com
New Technologies to Boost Future Military HUD Sales
[Avionics Today 07-24-2015] A new Technavio report on the Head-Up...
aviationtoday.com
Rockwell Collins to Upgrade Communications for E-4B
E-4B aircraft. Photo: Boeing [Avionics Today 07-23-2015] Boeing has selected...
aviationtoday.com
UTC CEO Speaks to ‘Market Softness’ Amid Sikorsky Sale
United Technologies Corporation CEO Gregory Hayes. Photo: UTC [Avionics Today...
aviationtoday.com
Boeing Shows Off Global Xpress for Military Networks
[Avionics Today 07-22-2015] Boeing is completing the first tests of...
aviationtoday.com
Sikorsky Sale vs. Spinoff? Simple Math
The decision to sell Sikorsky Aircraft rather than spin it...
aviationtoday.com
UTC Releases Disappointing Second Quarter Profits
Photo: UTC [Avionics Today 07-21-2015] Following the company’s announcement to...
aviationtoday.com


Privacy Statement - Copyright Information. - Contact Us

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +