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Crenshaw Lock

Door Closer Repair in San Dimas · 24/7 mobile

Door Closer Repair in San Dimas, California

Crenshaw Lock Company provides mobile door closer repair, adjustment and replacement for commercial doors in San Dimas, California, 24 hours a day, 7 days a week. We come to your business and fix the closer on site. Call (323) 997-8867 to describe the problem with your door.

  • Mobile to your San Dimas location
  • Available 24/7
  • Price quoted before we start
Call (323) 997-8867or tap to call — we answer 24/7
Hydraulic door closer mounted at the top of a commercial door
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A door closer is easy to ignore until it fails. Then the door slams hard enough to rattle the frame, or it drifts open and never latches, or it drags so slowly that people shove it. Any of these wears out hinges and strikes, and a door that does not latch is a security problem. It also makes a shop or office feel neglected. A hydraulic closer is a sealed, fluid-filled mechanism with valves that control how fast the door swings and how firmly it latches. Those valves can be adjusted, and when the unit is worn out, it can be replaced.

San Dimas has a mix of commercial buildings that put closers to work. The western-facade shops and civic buildings around Bonita Ave in Old Town San Dimas have doors that open and close all day. Small offices and service businesses along San Dimas Ave, Arrow Hwy and Foothill Blvd have their own entries, back doors and storage room doors. Each one needs a closer that is set up for its door, its traffic and its weather exposure.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and we are fully mobile. There is no storefront to visit. We bring the tools and common closer hardware to your door, look at what is actually wrong, and tell you plainly whether an adjustment will do or the unit needs replacing. Owner and lead technician David Shar built the business on that kind of honest assessment.

How it works in San Dimas

  1. 1

    You call and describe the door

    Call (323) 997-8867 any time of day or night. Tell us what the door is doing: slamming, not latching, closing too slowly, leaking fluid, or hanging off its arm. Tell us whether it is an interior or exterior door and whether it is a single or double door. That helps us bring the right parts.

  2. 2

    We come to your San Dimas location

    Because we are fully mobile, we drive to your building, whether it is a shop on Bonita Ave, an office near Foothill Blvd or a business elsewhere in town. We make no promises about arrival timing over the phone, but we are available around the clock.

  3. 3

    We inspect the closer and the door

    Many closer complaints come from the door, not the closer. We check the hinges, the frame alignment, the latch, the weatherstripping and the mounting. We also look for oil on the body, a bent arm, loose screws and cracked brackets.

  4. 4

    Adjust, repair or replace

    If the closer is sound, we adjust the sweep and latch speeds, and the backcheck where the model has one. If the arm, bracket or mounting is the problem, we fix those. If the unit is leaking or has lost its hydraulic control, we replace it with a closer sized for the door.

  5. 5

    Test and walk through

    We cycle the door repeatedly, check that it latches without a slam, and confirm it is easy enough to open. We show you where the adjustment valves are so you know what was changed.

Need door closer repair in San Dimas?

24/7 Mobile Locksmith across Greater Los Angeles & Ventura County. We answer 24/7.

Call (323) 997-8867

What affects the price

  • Whether the closer needs only adjustment or a full replacement
  • The size and grade of closer the door needs, based on its width, weight and traffic
  • Whether the door itself has problems, such as sagging hinges or a misaligned frame, that must be corrected first
  • The number of doors serviced in a single visit
  • Whether the closer is surface-mounted or concealed, and how involved the removal is
  • Time of day of the visit, since we are available 24/7, including after-hours calls

Why San Dimas chooses us

  • Fully mobile service: we fix the closer at your door and have no storefront or drop-off
  • In business since 1987, with owner David Shar leading the work
  • We diagnose the whole door, not only the closer, so you are not sold a new unit that will fail again for the same reason
  • We explain what we found and show you the adjustment points before we leave
  • Available 24/7, so a door that will not close or latch does not have to leave your business exposed overnight
  • We work on both single and double commercial doors and on different closer styles

Door Closer Repair across San Dimas

San Dimas has a distinct character, and its commercial doors reflect it. Old Town San Dimas, with its western-themed facades along Bonita Ave, is full of small retail and civic doors that are opened all day by customers, delivery people and staff. Those doors tend to wear a closer quickly. The charm of the buildings also means doors are sometimes older or unusual in size, which matters when choosing the right closer. We have also helped with lockouts at western-themed businesses on Bonita Ave, so the downtown is familiar territory.

Businesses across ZIP code 91773 sit along San Dimas Ave, Arrow Hwy and Foothill Blvd, and many are reached from the Interstate 210 (Foothill Freeway) or SR-57 (Orange Freeway). Exterior doors there face sun and wind that can make a closer work harder or let a door catch the breeze and slam. We adjust for both. Our work also extends to the more rural side of town near San Dimas Canyon, Frank G. Bonelli Regional Park and Puddingstone Reservoir, where outbuildings, gates and padlocks are common.

Another part of town, the Via Verde hillside community, is largely residential with HOA-standard hardware. Commercial closers are less common there, but we also handle locks and rekeying for homes in Via Verde. Whatever the property, one call to (323) 997-8867 reaches us.

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Other San Dimas locksmith services

See all of our San Dimas services, or our citywide door closer repair page.

Door Closer Repair in San Dimas — FAQs

My door slams every time it closes. Can that be fixed without replacing the closer?
Often, yes. Slamming usually means the latch speed is set too fast. Hydraulic closers have adjustment valves, and we can slow the final swing. If the unit is leaking or no longer controls the door, replacement may be needed. Call (323) 997-8867 and we will help sort it out.
Do you offer door closer repair in San Dimas at night or on weekends?
Yes. Crenshaw Lock Company is available 24/7 and fully mobile. A door that will not latch is a security concern, so we do not limit service to business hours. Call (323) 997-8867 any time.
Why does my door not latch fully?
The latch speed may be set too slow, the closer may be weak, or the door and frame may be out of alignment. Weatherstripping can also add resistance. We check all of these and fix the real cause.
How do I know if the closer is leaking?
Look for oily residue on the body or on the floor beneath it. A leaking closer has lost hydraulic fluid and usually cannot be adjusted back to reliable performance, so replacement is typically the answer.
Can you repair closers on older doors in Old Town San Dimas?
Yes. Older buildings along Bonita Ave sometimes have unusual door sizes or worn frames. We evaluate the door and choose a closer that fits it, and we address any hinge or alignment issues at the same visit.
Do you have a shop I can bring the closer to?
No. We are fully mobile only, with no storefront. We come to your business and do the work on site.
What affects the cost of door closer repair?
Cost depends on whether the closer needs adjustment or replacement, the size and grade of unit, the condition of the door, and how many doors are involved. We do not quote prices here, but we explain the factors when you call (323) 997-8867.
Can the same visit cover other lock problems on the door?
Usually. If the door also needs a rekey, a lock repair or a new strike, we can often handle it in the same visit. Mention it when you call (323) 997-8867 so we can bring what is needed.
DS

Reviewed by David Shar — Owner & Lead Technician

Crenshaw Lock Company has served Greater Los Angeles & Ventura County since 1987.

Last updated 2026-10-12.

Call (323) 997-8867 · Open 24/7