To avoid these ads, REGISTER NOW!

SB 705. Sight glass level. Other questions. Is this a knock-off?

frascati

Member
Joined
Feb 12, 2014
Messages
24
Filling the 705. Is the correct oil fill in the center of this sight glass?

Is the unloader valve a common sized schrader? It's leaking and I need to replace it.

How do I make amperage measurements. It's a new 3hp Leeson single ph at 230v running the 705 at approx 540 rpm. I have a clamp amp meter. I need directions on how to go about the process of determining the amp draw at the proper intervals and how that applies to maximizing the efficiency of the compressor. It's a beast of a motor at 86lb.

How is it that many of the big-box store compressors sport 5hp single ph motors that weigh less than half of this 3hp Leeson? Does that suggest anything by itself? Stronger torque? Better duty cycle? I'll post a pic of the name/spec plate on the motor tomorrow.

Are there any members here who run a 705 at or near 540rpm on an 80gal tank who might give me an idea of how long this should take to fill to 135lbs from empty?

How can one recognize a 705 clone? Mine is a rebuild that I purchased 15 years ago and am finally getting around to mounting. There seems to be a lot of opinion but few hard facts to go by in determining whether a 705 is genuine or not.

I've heard that the clones use metric fasteners. Mine are SAE.
The best respected compressor service and sales in the area has a brand new SB 705 on the floor with the inter-cooler bottom ports situated on the bottom pointing downward. I mentioned that mine were situated on the sides near the bottom pointing outward. He told me mine was a knock-off since SB never made them that way. I was disspirited. When next I looked at the SB site I noticed the graphic they post describing the 705 in cutaway....
cutaway.jpg

Above that graphic is another that shows them as his were situated.
703-705-pump_sm.jpg

So were they ever actually manufactured as the cutaway depicts them?
Or is he incorrect?

I noticed myself that some of the admitted knock-offs on the web have only threaded ports intake and output. My 705's output is threaded but also has a two bolt pattern for mounting a gasketed flange.

Mine does not have MADE IN USA cast into the side. The one on the sales floor did.

About 10 years back I telephoned SB and read them the eight or so numbers (i don't have them at hand right now) cast into the pump as well as a letter B inside of an arrowhead symbol on the head. He verified they were all Saylor Beall numbers and but stopped just short of assuring me that the pump was 100 percent genuine (of course I understand that not having the pump in his hands, so to speak).

It might sound like I'm being overly concerned. The business that I purchased the rebuild from, in Grand Rapids, MI, is reputable and sold it as genuine with a rebuild tag affixed to it. It was on their shelves and they were in the process of moving and advertised much of their inventory at steep discounts. I think I remember purchasing it for about 200 dollars after making an offer.

I can post pics and casting numbers later this weekend.

Thanks so much.
 
To avoid these ads, REGISTER NOW!

C96

Well-known member
Joined
Nov 30, 2013
Messages
1,251
I have the 705 5hp model mounted on the 80 gallon vertical tank model VT-735-80.
It says Saylor Beall Made in USA and this is cast directly into the crankcase just below the inter-cooler. BTW, mine has the inter-cooler ports on the bottom pointing downward just like the one at the Saylor-Beal dealer you visited. Also, aside from the lifting eye, mine looks exactly like the tiny picture you posted just below the large cutaway.

It’s possible you have the older version of this pump and I believe they look different.

Hope this helps,

Good Luck
 
To avoid these ads, REGISTER NOW!

kams1973

ALLIANCE MEMBER
Joined
Oct 3, 2010
Messages
1,582
Location
Amarillo, TX
I have an older SB pump that I rebuilt myself. It does not have 'Made in USA' casted on the side of the crankcase. If all the fasteners are SAE, I'm sure it's a genuine SB. Also, when the pump was rebuilt, the intercooler may have been replaced with an aftermarket cooler.
 
OP
F

frascati

Member
Joined
Feb 12, 2014
Messages
24
Filling the 705. Is the correct oil fill in the center of this sight glass?

Is the unloader valve a common sized schrader? It's leaking and I need to replace it.

How easy is it to remove/replace the valves for inspection? Half hour job? Two hour job? I've read here that the discs are reconditionable. Any good links on the web for instructions on this? Viewed from the open ports with a flashlight the valve bodies are a bit rusty despite that they were oiled and well sealed during 15 years of storage.

How do I make correct amperage measurements to determine optimum rpm for this motor/pump/tank combo?

New 3hp Leeson single ph at 230v

705 running at approx 540 rpm.

Have a clamp amp meter.

Need directions on how to go about process of
determining amp draw at proper intervals &
how that applies to maximizing efficiency of
compressor.


Finally any members here who run a 705 at or near 540rpm on an 80gal tank who might give me an idea of how long this should take to fill to 135lbs from empty?


I'll call Saylor Beall with these questions on Monday and post answers in case anyone else is interested.

I'll get those photos of the motor nameplate and pump on here tonight or tomorrow. It's not here. I donated the pump to a friend's berry farm since he'll get much better use than I'd ever need. I've got a small compressor under my workbench that serves me just fine for occasional use in my small shop.

Thanks again.
 
Last edited:
To avoid these ads, REGISTER NOW!
Top Bottom